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68786233 = 174198689
BaseRepresentation
bin1000001100110…
…01100000111001
311210102200222021
410012121200321
5120102124413
610454154441
71463446645
oct406314071
9153380867
1068786233
113591212a
121b052a21
1311335219
1491c7c25
15608b18d
hex4199839

68786233 has 8 divisors (see below), whose sum is σ = 74609640. Its totient is φ = 63160320.

The previous prime is 68786227. The next prime is 68786257. The reversal of 68786233 is 33268786.

It can be written as a sum of positive squares in 4 ways, for example, as 6012304 + 62773929 = 2452^2 + 7923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68786233 - 221 = 66689081 is a prime.

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 68786233.

It is not an unprimeable number, because it can be changed into a prime (68786273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48648 + ... + 50041.

It is an arithmetic number, because the mean of its divisors is an integer number (9326205).

Almost surely, 268786233 is an apocalyptic number.

It is an amenable number.

68786233 is a deficient number, since it is larger than the sum of its proper divisors (5823407).

68786233 is a wasteful number, since it uses less digits than its factorization.

68786233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98747.

The product of its digits is 290304, while the sum is 43.

The square root of 68786233 is about 8293.7466201952. The cubic root of 68786233 is about 409.7325898554.

The spelling of 68786233 in words is "sixty-eight million, seven hundred eighty-six thousand, two hundred thirty-three".

Divisors: 1 17 41 697 98689 1677713 4046249 68786233