72816694 has 8 divisors (see below), whose sum is σ = 109694520. Its totient is φ = 36251856.

The previous prime is 72816691. The next prime is 72816701. The reversal of 72816694 is 49661827.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72816694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72816691) 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, 77664 + ... + 78595.

It is an arithmetic number, because the mean of its divisors is an integer number (13711815).

Almost surely, 2^72816694 is an apocalyptic number.

72816694 is a deficient number, since it is larger than the sum of its proper divisors (36877826).

72816694 is a wasteful number, since it uses less digits than its factorization.

72816694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156494.

The product of its digits is 145152, while the sum is 43.

The square root of 72816694 is about 8533.2698304929. The cubic root of 72816694 is about 417.5838100120.

The spelling of 72816694 in words is "seventy-two million, eight hundred sixteen thousand, six hundred ninety-four".