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64896841 = 79821479
BaseRepresentation
bin1111011110001…
…1111101001001
311112010002201201
43313203331021
5113103144331
610234544201
71415420422
oct367437511
9145102651
1064896841
11336a5a59
1219898061
13105a2ac9
148894649
155a6da61
hex3de3f49

64896841 has 4 divisors (see below), whose sum is σ = 65718400. Its totient is φ = 64075284.

The previous prime is 64896827. The next prime is 64896883. The reversal of 64896841 is 14869846.

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.

It is a cyclic number.

It is not a de Polignac number, because 64896841 - 29 = 64896329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64896791 and 64896800.

It is not an unprimeable number, because it can be changed into a prime (64896241) 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, 410661 + ... + 410818.

It is an arithmetic number, because the mean of its divisors is an integer number (16429600).

Almost surely, 264896841 is an apocalyptic number.

It is an amenable number.

64896841 is a deficient number, since it is larger than the sum of its proper divisors (821559).

64896841 is an equidigital number, since it uses as much as digits as its factorization.

64896841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821558.

The product of its digits is 331776, while the sum is 46.

The square root of 64896841 is about 8055.8575583236. The cubic root of 64896841 is about 401.8597585942.

The spelling of 64896841 in words is "sixty-four million, eight hundred ninety-six thousand, eight hundred forty-one".

Divisors: 1 79 821479 64896841