97986321 has 8 divisors (see below), whose sum is σ = 145164960. Its totient is φ = 65324196.

The previous prime is 97986299. The next prime is 97986359. The reversal of 97986321 is 12368979.

97986321 is a `hidden beast` number, since 9 + 7 + 9 + 8 + 632 + 1 = 666.

It is not a de Polignac number, because 97986321 - 2⁵ = 97986289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97981321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814535 + ... + 1814588.

It is an arithmetic number, because the mean of its divisors is an integer number (18145620).

Almost surely, 2^97986321 is an apocalyptic number.

It is an amenable number.

97986321 is a deficient number, since it is larger than the sum of its proper divisors (47178639).

97986321 is a wasteful number, since it uses less digits than its factorization.

97986321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629132 (or 3629126 counting only the distinct ones).

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

The square root of 97986321 is about 9898.8040186681. The cubic root of 97986321 is about 461.0221771335.

The spelling of 97986321 in words is "ninety-seven million, nine hundred eighty-six thousand, three hundred twenty-one".