72679688 has 8 divisors (see below), whose sum is σ = 136274430. Its totient is φ = 36339840.

The previous prime is 72679639. The next prime is 72679699. The reversal of 72679688 is 88697627.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66618244 + 6061444 = 8162^2 + 2462^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4542473 + ... + 4542488.

Almost surely, 2^72679688 is an apocalyptic number.

It is an amenable number.

72679688 is a deficient number, since it is larger than the sum of its proper divisors (63594742).

72679688 is a wasteful number, since it uses less digits than its factorization.

72679688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9084967 (or 9084963 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The square root of 72679688 is about 8525.2382957897. The cubic root of 72679688 is about 417.3217482814.

The spelling of 72679688 in words is "seventy-two million, six hundred seventy-nine thousand, six hundred eighty-eight".