85796681 has 4 divisors (see below), whose sum is σ = 86972052. Its totient is φ = 84621312.

The previous prime is 85796677. The next prime is 85796699. The reversal of 85796681 is 18669758.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46308025 + 39488656 = 6805^2 + 6284^2 .

It is a cyclic number.

It is not a de Polignac number, because 85796681 - 2² = 85796677 is a prime.

It is a super-2 number, since 2×85796681² = 14722140941231522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85796611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587576 + ... + 587721.

It is an arithmetic number, because the mean of its divisors is an integer number (21743013).

Almost surely, 2^85796681 is an apocalyptic number.

It is an amenable number.

85796681 is a deficient number, since it is larger than the sum of its proper divisors (1175371).

85796681 is a wasteful number, since it uses less digits than its factorization.

85796681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175370.

The product of its digits is 725760, while the sum is 50.

The square root of 85796681 is about 9262.6497828645. The cubic root of 85796681 is about 441.0523725043.

The spelling of 85796681 in words is "eighty-five million, seven hundred ninety-six thousand, six hundred eighty-one".