72660464 has 20 divisors (see below), whose sum is σ = 140950056. Its totient is φ = 36286272.

The previous prime is 72660451. The next prime is 72660479. The reversal of 72660464 is 46406627.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 13967 + ... + 18449.

Almost surely, 2^72660464 is an apocalyptic number.

It is an amenable number.

72660464 is a deficient number, since it is larger than the sum of its proper divisors (68289592).

72660464 is a wasteful number, since it uses less digits than its factorization.

72660464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504 (or 5498 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 72660464 is about 8524.1107454092. The cubic root of 72660464 is about 417.2849507435.

The spelling of 72660464 in words is "seventy-two million, six hundred sixty thousand, four hundred sixty-four".