72604665 has 48 divisors (see below), whose sum is σ = 145611648. Its totient is φ = 32779008.

The previous prime is 72604607. The next prime is 72604667. The reversal of 72604665 is 56640627.

It is not a de Polignac number, because 72604665 - 2⁸ = 72604409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72604667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24757 + ... + 27533.

It is an arithmetic number, because the mean of its divisors is an integer number (3033576).

Almost surely, 2^72604665 is an apocalyptic number.

It is an amenable number.

72604665 is an abundant number, since it is smaller than the sum of its proper divisors (73006983).

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

72604665 is a wasteful number, since it uses less digits than its factorization.

72604665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 72604665 is about 8520.8371067636. The cubic root of 72604665 is about 417.1781065511.

The spelling of 72604665 in words is "seventy-two million, six hundred four thousand, six hundred sixty-five".