72650056 has 8 divisors (see below), whose sum is σ = 136218870. Its totient is φ = 36325024.

The previous prime is 72650051. The next prime is 72650057. The reversal of 72650056 is 65005627.

It can be written as a sum of positive squares in only one way, i.e., 59444100 + 13205956 = 7710^2 + 3634^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72650051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4540621 + ... + 4540636.

Almost surely, 2^72650056 is an apocalyptic number.

It is an amenable number.

72650056 is a deficient number, since it is larger than the sum of its proper divisors (63568814).

72650056 is a wasteful number, since it uses less digits than its factorization.

72650056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081263 (or 9081259 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 72650056 is about 8523.5002199801. The cubic root of 72650056 is about 417.2650256062.

The spelling of 72650056 in words is "seventy-two million, six hundred fifty thousand, fifty-six".