97623557 has 16 divisors (see below), whose sum is σ = 103150080. Its totient is φ = 92275200.

The previous prime is 97623551. The next prime is 97623587. The reversal of 97623557 is 75532679.

It is a cyclic number.

It is not a de Polignac number, because 97623557 - 2⁸ = 97623301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97623551) 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 15 ways as a sum of consecutive naturals, for example, 404957 + ... + 405197.

It is an arithmetic number, because the mean of its divisors is an integer number (6446880).

Almost surely, 2^97623557 is an apocalyptic number.

It is an amenable number.

97623557 is a deficient number, since it is larger than the sum of its proper divisors (5526523).

97623557 is a wasteful number, since it uses less digits than its factorization.

97623557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its digits is 396900, while the sum is 44.

The square root of 97623557 is about 9880.4634000638. The cubic root of 97623557 is about 460.4525429899.

The spelling of 97623557 in words is "ninety-seven million, six hundred twenty-three thousand, five hundred fifty-seven".