72604655 has 4 divisors (see below), whose sum is σ = 87125592. Its totient is φ = 58083720.

The previous prime is 72604607. The next prime is 72604667. The reversal of 72604655 is 55640627.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72604655 - 2⁶ = 72604591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7260461 + ... + 7260470.

It is an arithmetic number, because the mean of its divisors is an integer number (21781398).

Almost surely, 2^72604655 is an apocalyptic number.

72604655 is a deficient number, since it is larger than the sum of its proper divisors (14520937).

72604655 is a wasteful number, since it uses less digits than its factorization.

72604655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14520936.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 72604655 is about 8520.8365199668. The cubic root of 72604655 is about 417.1780873982.

The spelling of 72604655 in words is "seventy-two million, six hundred four thousand, six hundred fifty-five".