72604813 has 16 divisors (see below), whose sum is σ = 77573376. Its totient is φ = 67809280.

The previous prime is 72604799. The next prime is 72604817. The reversal of 72604813 is 31840627.

It is a cyclic number.

It is not a de Polignac number, because 72604813 - 2⁵ = 72604781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72604817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282381 + ... + 282637.

It is an arithmetic number, because the mean of its divisors is an integer number (4848336).

Almost surely, 2^72604813 is an apocalyptic number.

It is an amenable number.

72604813 is a deficient number, since it is larger than the sum of its proper divisors (4968563).

72604813 is a wasteful number, since it uses less digits than its factorization.

72604813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 72604813 is about 8520.8457913519. The cubic root of 72604813 is about 417.1783900146.

The spelling of 72604813 in words is "seventy-two million, six hundred four thousand, eight hundred thirteen".