72664076 has 6 divisors (see below), whose sum is σ = 127162140. Its totient is φ = 36332036.

The previous prime is 72664073. The next prime is 72664133. The reversal of 72664076 is 67046627.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72664073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9083006 + ... + 9083013.

It is an arithmetic number, because the mean of its divisors is an integer number (21193690).

Almost surely, 2^72664076 is an apocalyptic number.

It is an amenable number.

72664076 is a deficient number, since it is larger than the sum of its proper divisors (54498064).

72664076 is a wasteful number, since it uses less digits than its factorization.

72664076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18166023 (or 18166021 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 72664076 is about 8524.3226123839. The cubic root of 72664076 is about 417.2918651331.

The spelling of 72664076 in words is "seventy-two million, six hundred sixty-four thousand, seventy-six".