72706576 has 20 divisors (see below), whose sum is σ = 141122044. Its totient is φ = 36288000.

The previous prime is 72706561. The next prime is 72706583. The reversal of 72706576 is 67560727.

It can be written as a sum of positive squares in 2 ways, for example, as 39942400 + 32764176 = 6320^2 + 5724^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5836 + ... + 13396.

Almost surely, 2^72706576 is an apocalyptic number.

It is an amenable number.

72706576 is a deficient number, since it is larger than the sum of its proper divisors (68415468).

72706576 is a wasteful number, since it uses less digits than its factorization.

72706576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170 (or 8164 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 72706576 is about 8526.8151146838. The cubic root of 72706576 is about 417.3732049494.

The spelling of 72706576 in words is "seventy-two million, seven hundred six thousand, five hundred seventy-six".