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6804892213 = 7972127459
BaseRepresentation
bin1100101011001101…
…00110101000110101
3122120020121100012221
412111212212220311
5102414023022323
63043124242341
7330426425620
oct62546465065
918506540187
106804892213
112982203269
12139ab403b1
13845a72652
14487a8cdb7
1529c62955d
hex1959a6a35

6804892213 has 4 divisors (see below), whose sum is σ = 7777019680. Its totient is φ = 5832764748.

The previous prime is 6804892187. The next prime is 6804892231. The reversal of 6804892213 is 3122984086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3122984086 = 21561492043.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-6804892213 is a prime.

It is a super-3 number, since 3×68048922133 (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6804892213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6804892513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486063723 + ... + 486063736.

It is an arithmetic number, because the mean of its divisors is an integer number (1944254920).

Almost surely, 26804892213 is an apocalyptic number.

It is an amenable number.

6804892213 is a deficient number, since it is larger than the sum of its proper divisors (972127467).

6804892213 is an equidigital number, since it uses as much as digits as its factorization.

6804892213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972127466.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 6804892213 is about 82491.7705774340. The cubic root of 6804892213 is about 1894.9907025161.

The spelling of 6804892213 in words is "six billion, eight hundred four million, eight hundred ninety-two thousand, two hundred thirteen".

Divisors: 1 7 972127459 6804892213