72672616 has 8 divisors (see below), whose sum is σ = 136261170. Its totient is φ = 36336304.

The previous prime is 72672563. The next prime is 72672641. The reversal of 72672616 is 61627627.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 33108516 = 6290^2 + 5754^2 .

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4542031 + ... + 4542046.

Almost surely, 2^72672616 is an apocalyptic number.

It is an amenable number.

72672616 is a deficient number, since it is larger than the sum of its proper divisors (63588554).

72672616 is a wasteful number, since it uses less digits than its factorization.

72672616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9084083 (or 9084079 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 72672616 is about 8524.8235172348. The cubic root of 72672616 is about 417.3082121972.

The spelling of 72672616 in words is "seventy-two million, six hundred seventy-two thousand, six hundred sixteen".