97697655 has 24 divisors (see below), whose sum is σ = 184738320. Its totient is φ = 47368320.

The previous prime is 97697651. The next prime is 97697659. The reversal of 97697655 is 55679679.

It is an interprime number because it is at equal distance from previous prime (97697651) and next prime (97697659).

It is not a de Polignac number, because 97697655 - 2² = 97697651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97697651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98190 + ... + 99179.

It is an arithmetic number, because the mean of its divisors is an integer number (7697430).

Almost surely, 2^97697655 is an apocalyptic number.

97697655 is a deficient number, since it is larger than the sum of its proper divisors (87040665).

97697655 is a wasteful number, since it uses less digits than its factorization.

97697655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197391 (or 197388 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 54.

The square root of 97697655 is about 9884.2124117200. The cubic root of 97697655 is about 460.5690107258.

It can be divided in two parts, 9769 and 7655, that added together give a square (17424 = 132²).

The spelling of 97697655 in words is "ninety-seven million, six hundred ninety-seven thousand, six hundred fifty-five".