72959737 has 4 divisors (see below), whose sum is σ = 75475620. Its totient is φ = 70443856.

The previous prime is 72959729. The next prime is 72959743. The reversal of 72959737 is 73795927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16168441 + 56791296 = 4021^2 + 7536^2 .

It is a cyclic number.

It is not a de Polignac number, because 72959737 - 2³ = 72959729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72959707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257898 + ... + 1257955.

It is an arithmetic number, because the mean of its divisors is an integer number (18868905).

Almost surely, 2^72959737 is an apocalyptic number.

It is an amenable number.

72959737 is a deficient number, since it is larger than the sum of its proper divisors (2515883).

72959737 is a wasteful number, since it uses less digits than its factorization.

72959737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515882.

The product of its digits is 833490, while the sum is 49.

The square root of 72959737 is about 8541.6472064819. The cubic root of 72959737 is about 417.8570686425.

The spelling of 72959737 in words is "seventy-two million, nine hundred fifty-nine thousand, seven hundred thirty-seven".