72712735 has 4 divisors (see below), whose sum is σ = 87255288. Its totient is φ = 58170184.

The previous prime is 72712709. The next prime is 72712741. The reversal of 72712735 is 53721727.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72712735 - 2¹³ = 72704543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72712735.

It is a congruent number.

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, 7271269 + ... + 7271278.

It is an arithmetic number, because the mean of its divisors is an integer number (21813822).

Almost surely, 2^72712735 is an apocalyptic number.

72712735 is a deficient number, since it is larger than the sum of its proper divisors (14542553).

72712735 is a wasteful number, since it uses less digits than its factorization.

72712735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14542552.

The product of its digits is 20580, while the sum is 34.

The square root of 72712735 is about 8527.1762618114. The cubic root of 72712735 is about 417.3849898943.

The spelling of 72712735 in words is "seventy-two million, seven hundred twelve thousand, seven hundred thirty-five".