72966863 has 4 divisors (see below), whose sum is σ = 73087680. Its totient is φ = 72846048.

The previous prime is 72966857. The next prime is 72966911. The reversal of 72966863 is 36866927.

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 72966863 - 2¹⁶ = 72901327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72966163) 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, 59498 + ... + 60711.

It is an arithmetic number, because the mean of its divisors is an integer number (18271920).

Almost surely, 2^72966863 is an apocalyptic number.

72966863 is a deficient number, since it is larger than the sum of its proper divisors (120817).

72966863 is a wasteful number, since it uses less digits than its factorization.

72966863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120816.

The product of its digits is 653184, while the sum is 47.

The square root of 72966863 is about 8542.0643289547. The cubic root of 72966863 is about 417.8706722759.

The spelling of 72966863 in words is "seventy-two million, nine hundred sixty-six thousand, eight hundred sixty-three".