72770696 has 16 divisors (see below), whose sum is σ = 139020300. Its totient is φ = 35698624.

The previous prime is 72770651. The next prime is 72770699. The reversal of 72770696 is 69607727.

It can be written as a sum of positive squares in 2 ways, for example, as 69122596 + 3648100 = 8314^2 + 1910^2 .

It is not an unprimeable number, because it can be changed into a prime (72770699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85391 + ... + 86238.

Almost surely, 2^72770696 is an apocalyptic number.

It is an amenable number.

72770696 is a deficient number, since it is larger than the sum of its proper divisors (66249604).

72770696 is a wasteful number, since it uses less digits than its factorization.

72770696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171688 (or 171684 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 72770696 is about 8530.5741893497. The cubic root of 72770696 is about 417.4958628440.

The spelling of 72770696 in words is "seventy-two million, seven hundred seventy thousand, six hundred ninety-six".