97985690 has 32 divisors (see below), whose sum is σ = 194135616. Its totient is φ = 35311360.

The previous prime is 97985689. The next prime is 97985737. The reversal of 97985690 is 9658979.

It is a super-2 number, since 2×97985690² = 19202390889552200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8489 + ... + 16371.

It is an arithmetic number, because the mean of its divisors is an integer number (6066738).

Almost surely, 2^97985690 is an apocalyptic number.

97985690 is a deficient number, since it is larger than the sum of its proper divisors (96149926).

97985690 is a wasteful number, since it uses less digits than its factorization.

97985690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 97985690 is about 9898.7721460795. The cubic root of 97985690 is about 461.0211875205.

The spelling of 97985690 in words is "ninety-seven million, nine hundred eighty-five thousand, six hundred ninety".