72537704 has 8 divisors (see below), whose sum is σ = 136008210. Its totient is φ = 36268848.

The previous prime is 72537697. The next prime is 72537743. The reversal of 72537704 is 40773527.

It can be written as a sum of positive squares in only one way, i.e., 47637604 + 24900100 = 6902^2 + 4990^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4533599 + ... + 4533614.

Almost surely, 2^72537704 is an apocalyptic number.

It is an amenable number.

72537704 is a deficient number, since it is larger than the sum of its proper divisors (63470506).

72537704 is a wasteful number, since it uses less digits than its factorization.

72537704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067219 (or 9067215 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 72537704 is about 8516.9069502960. The cubic root of 72537704 is about 417.0498170197.

The spelling of 72537704 in words is "seventy-two million, five hundred thirty-seven thousand, seven hundred four".