97918623 has 48 divisors (see below), whose sum is σ = 165818016. Its totient is φ = 55019520.

The previous prime is 97918577. The next prime is 97918627. The reversal of 97918623 is 32681979.

97918623 is a `hidden beast` number, since 9 + 7 + 9 + 18 + 623 = 666.

It is not a de Polignac number, because 97918623 - 2¹⁷ = 97787551 is a prime.

It is a super-2 number, since 2×97918623² = 19176113460432258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97918627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122461 + ... + 123257.

It is an arithmetic number, because the mean of its divisors is an integer number (3454542).

Almost surely, 2^97918623 is an apocalyptic number.

97918623 is a deficient number, since it is larger than the sum of its proper divisors (67899393).

97918623 is a wasteful number, since it uses less digits than its factorization.

97918623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 901 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 97918623 is about 9895.3839238303. The cubic root of 97918623 is about 460.9159804405.

The spelling of 97918623 in words is "ninety-seven million, nine hundred eighteen thousand, six hundred twenty-three".