72774604 has 18 divisors (see below), whose sum is σ = 148148700. Its totient is φ = 31189032.

The previous prime is 72774593. The next prime is 72774607. The reversal of 72774604 is 40647727.

It is a happy number.

It is a super-2 number, since 2×72774604² = 10592285974713632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72774607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 185454 + ... + 185845.

Almost surely, 2^72774604 is an apocalyptic number.

It is an amenable number.

72774604 is an abundant number, since it is smaller than the sum of its proper divisors (75374096).

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

72774604 is a wasteful number, since it uses less digits than its factorization.

72774604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371317 (or 371308 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 72774604 is about 8530.8032447127. The cubic root of 72774604 is about 417.5033362947.

It can be divided in two parts, 7277 and 4604, that added together give a square (11881 = 109²).

The spelling of 72774604 in words is "seventy-two million, seven hundred seventy-four thousand, six hundred four".