72576747 has 12 divisors (see below), whose sum is σ = 106161120. Its totient is φ = 47771568.

The previous prime is 72576743. The next prime is 72576767. The reversal of 72576747 is 74767527.

72576747 is a `hidden beast` number, since 7 + 2 + 576 + 74 + 7 = 666.

It is not a de Polignac number, because 72576747 - 2² = 72576743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72576743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50328 + ... + 51749.

It is an arithmetic number, because the mean of its divisors is an integer number (8846760).

Almost surely, 2^72576747 is an apocalyptic number.

72576747 is a deficient number, since it is larger than the sum of its proper divisors (33584373).

72576747 is a wasteful number, since it uses less digits than its factorization.

72576747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102162 (or 102159 counting only the distinct ones).

The product of its digits is 576240, while the sum is 45.

The square root of 72576747 is about 8519.1987299276. The cubic root of 72576747 is about 417.1246284837.

The spelling of 72576747 in words is "seventy-two million, five hundred seventy-six thousand, seven hundred forty-seven".