72479864 has 16 divisors (see below), whose sum is σ = 137220720. Its totient is φ = 35887680.

The previous prime is 72479861. The next prime is 72479867. The reversal of 72479864 is 46897427.

It is an interprime number because it is at equal distance from previous prime (72479861) and next prime (72479867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72479861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43157 + ... + 44804.

It is an arithmetic number, because the mean of its divisors is an integer number (8576295).

Almost surely, 2^72479864 is an apocalyptic number.

It is an amenable number.

72479864 is a deficient number, since it is larger than the sum of its proper divisors (64740856).

72479864 is a wasteful number, since it uses less digits than its factorization.

72479864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88070 (or 88066 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 72479864 is about 8513.5106742166. The cubic root of 72479864 is about 416.9389387021.

The spelling of 72479864 in words is "seventy-two million, four hundred seventy-nine thousand, eight hundred sixty-four".