97930816 has 21 divisors (see below), whose sum is σ = 194488689. Its totient is φ = 48925824.

The previous prime is 97930813. The next prime is 97930817. The reversal of 97930816 is 61803979.

The square root of 97930816 is 9896.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 73960000 + 23970816 = 8600^2 + 4896^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97930813) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 78550 + ... + 79786.

Almost surely, 2^97930816 is an apocalyptic number.

97930816 is the 9896-th square number.

It is an amenable number.

97930816 is a deficient number, since it is larger than the sum of its proper divisors (96557873).

97930816 is an frugal number, since it uses more digits than its factorization.

97930816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The cubic root of 97930816 is about 460.9351110040.

The spelling of 97930816 in words is "ninety-seven million, nine hundred thirty thousand, eight hundred sixteen".