97661656 has 16 divisors (see below), whose sum is σ = 189023040. Its totient is φ = 47255520.

The previous prime is 97661633. The next prime is 97661659. The reversal of 97661656 is 65616679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97661659) 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, 196651 + ... + 197146.

It is an arithmetic number, because the mean of its divisors is an integer number (11813940).

Almost surely, 2^97661656 is an apocalyptic number.

It is an amenable number.

97661656 is a deficient number, since it is larger than the sum of its proper divisors (91361384).

97661656 is a wasteful number, since it uses less digits than its factorization.

97661656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393834 (or 393830 counting only the distinct ones).

The product of its digits is 408240, while the sum is 46.

The square root of 97661656 is about 9882.3912086094. The cubic root of 97661656 is about 460.5124346129.

The spelling of 97661656 in words is "ninety-seven million, six hundred sixty-one thousand, six hundred fifty-six".