78597970 has 48 divisors (see below), whose sum is σ = 164697624. Its totient is φ = 26892800.

The previous prime is 78597913. The next prime is 78597997. The reversal of 78597970 is 7979587.

It can be written as a sum of positive squares in 4 ways, for example, as 78021889 + 576081 = 8833^2 + 759^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18660 + ... + 22480.

Almost surely, 2^78597970 is an apocalyptic number.

78597970 is an abundant number, since it is smaller than the sum of its proper divisors (86099654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78597970 is a wasteful number, since it uses less digits than its factorization.

78597970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867 (or 3856 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 52.

The square root of 78597970 is about 8865.5496163521. The cubic root of 78597970 is about 428.3549367427.

The spelling of 78597970 in words is "seventy-eight million, five hundred ninety-seven thousand, nine hundred seventy".