97660657 has 4 divisors (see below), whose sum is σ = 97680496. Its totient is φ = 97640820.

The previous prime is 97660639. The next prime is 97660681. The reversal of 97660657 is 75606679.

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 a de Polignac number, because none of the positive numbers 2^k-97660657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97660457) 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, 3682 + ... + 14452.

It is an arithmetic number, because the mean of its divisors is an integer number (24420124).

Almost surely, 2^97660657 is an apocalyptic number.

It is an amenable number.

97660657 is a deficient number, since it is larger than the sum of its proper divisors (19839).

97660657 is a wasteful number, since it uses less digits than its factorization.

97660657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19838.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 97660657 is about 9882.3406640330. The cubic root of 97660657 is about 460.5108643840.

The spelling of 97660657 in words is "ninety-seven million, six hundred sixty thousand, six hundred fifty-seven".