72613648 has 20 divisors (see below), whose sum is σ = 140992960. Its totient is φ = 36228384.

The previous prime is 72613643. The next prime is 72613663. The reversal of 72613648 is 84631627.

It is not an unprimeable number, because it can be changed into a prime (72613643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3133 + ... + 12451.

It is an arithmetic number, because the mean of its divisors is an integer number (7049648).

Almost surely, 2^72613648 is an apocalyptic number.

It is an amenable number.

72613648 is a deficient number, since it is larger than the sum of its proper divisors (68379312).

72613648 is a wasteful number, since it uses less digits than its factorization.

72613648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9814 (or 9808 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 72613648 is about 8521.3642100312. The cubic root of 72613648 is about 417.1953109387.

The spelling of 72613648 in words is "seventy-two million, six hundred thirteen thousand, six hundred forty-eight".