72716755 has 8 divisors (see below), whose sum is σ = 89116992. Its totient is φ = 56935488.

The previous prime is 72716747. The next prime is 72716767. The reversal of 72716755 is 55761727.

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

It is a cyclic number.

It is not a de Polignac number, because 72716755 - 2³ = 72716747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154482 + ... + 154951.

It is an arithmetic number, because the mean of its divisors is an integer number (11139624).

Almost surely, 2^72716755 is an apocalyptic number.

72716755 is a deficient number, since it is larger than the sum of its proper divisors (16400237).

72716755 is a wasteful number, since it uses less digits than its factorization.

72716755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309485.

The product of its digits is 102900, while the sum is 40.

The square root of 72716755 is about 8527.4119755058. The cubic root of 72716755 is about 417.3926816086.

The spelling of 72716755 in words is "seventy-two million, seven hundred sixteen thousand, seven hundred fifty-five".