97631578 has 32 divisors (see below), whose sum is σ = 173311488. Its totient is φ = 40742400.

The previous prime is 97631563. The next prime is 97631579. The reversal of 97631578 is 87513679.

It is not an unprimeable number, because it can be changed into a prime (97631579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12151 + ... + 18517.

It is an arithmetic number, because the mean of its divisors is an integer number (5415984).

Almost surely, 2^97631578 is an apocalyptic number.

97631578 is a deficient number, since it is larger than the sum of its proper divisors (75679910).

97631578 is a wasteful number, since it uses less digits than its factorization.

97631578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438.

The product of its digits is 317520, while the sum is 46.

The square root of 97631578 is about 9880.8692937413. The cubic root of 97631578 is about 460.4651532957.

The spelling of 97631578 in words is "ninety-seven million, six hundred thirty-one thousand, five hundred seventy-eight".