72382664 has 8 divisors (see below), whose sum is σ = 135717510. Its totient is φ = 36191328.

The previous prime is 72382603. The next prime is 72382691. The reversal of 72382664 is 46628327.

It can be written as a sum of positive squares in only one way, i.e., 67930564 + 4452100 = 8242^2 + 2110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4523909 + ... + 4523924.

Almost surely, 2^72382664 is an apocalyptic number.

It is an amenable number.

72382664 is a deficient number, since it is larger than the sum of its proper divisors (63334846).

72382664 is a wasteful number, since it uses less digits than its factorization.

72382664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9047839 (or 9047835 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 72382664 is about 8507.8001857119. The cubic root of 72382664 is about 416.7524749852.

The spelling of 72382664 in words is "seventy-two million, three hundred eighty-two thousand, six hundred sixty-four".