72739610 has 8 divisors (see below), whose sum is σ = 130931316. Its totient is φ = 29095840.

The previous prime is 72739603. The next prime is 72739613. The reversal of 72739610 is 1693727.

It can be written as a sum of positive squares in 2 ways, for example, as 70040161 + 2699449 = 8369^2 + 1643^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72739613) 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, 3636971 + ... + 3636990.

Almost surely, 2^72739610 is an apocalyptic number.

72739610 is a deficient number, since it is larger than the sum of its proper divisors (58191706).

72739610 is a wasteful number, since it uses less digits than its factorization.

72739610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7273968.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 72739610 is about 8528.7519602812. The cubic root of 72739610 is about 417.4364061050.

The spelling of 72739610 in words is "seventy-two million, seven hundred thirty-nine thousand, six hundred ten".