72996755 has 16 divisors (see below), whose sum is σ = 95208960. Its totient is φ = 53405568.

The previous prime is 72996743. The next prime is 72996761. The reversal of 72996755 is 55769927.

It is a cyclic number.

It is not a de Polignac number, because 72996755 - 2¹² = 72992659 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1934 + ... + 12236.

It is an arithmetic number, because the mean of its divisors is an integer number (5950560).

Almost surely, 2^72996755 is an apocalyptic number.

72996755 is a deficient number, since it is larger than the sum of its proper divisors (22212205).

72996755 is a wasteful number, since it uses less digits than its factorization.

72996755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10430.

The product of its digits is 1190700, while the sum is 50.

The square root of 72996755 is about 8543.8138439458. The cubic root of 72996755 is about 417.9277268725.

The spelling of 72996755 in words is "seventy-two million, nine hundred ninety-six thousand, seven hundred fifty-five".