97568681 has 4 divisors (see below), whose sum is σ = 111507072. Its totient is φ = 83630292.

The previous prime is 97568659. The next prime is 97568689. The reversal of 97568681 is 18686579.

It is a happy number.

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 97568681 - 2⁶ = 97568617 is a prime.

It is a super-2 number, since 2×97568681² = 19039295024159522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97568689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6969185 + ... + 6969198.

It is an arithmetic number, because the mean of its divisors is an integer number (27876768).

Almost surely, 2^97568681 is an apocalyptic number.

It is an amenable number.

97568681 is a deficient number, since it is larger than the sum of its proper divisors (13938391).

97568681 is a wasteful number, since it uses less digits than its factorization.

97568681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13938390.

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

The square root of 97568681 is about 9877.6860144469. The cubic root of 97568681 is about 460.3662505331.

The spelling of 97568681 in words is "ninety-seven million, five hundred sixty-eight thousand, six hundred eighty-one".