216772959 has 8 divisors (see below), whose sum is σ = 311263792. Its totient is φ = 133398720.

The previous prime is 216772951. The next prime is 216772961. The reversal of 216772959 is 959277612.

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

It is not a de Polignac number, because 216772959 - 2³ = 216772951 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 (216772951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2779102 + ... + 2779179.

It is an arithmetic number, because the mean of its divisors is an integer number (38907974).

Almost surely, 2^216772959 is an apocalyptic number.

216772959 is a deficient number, since it is larger than the sum of its proper divisors (94490833).

216772959 is a wasteful number, since it uses less digits than its factorization.

216772959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558297.

The product of its digits is 476280, while the sum is 48.

The square root of 216772959 is about 14723.2115722080. The cubic root of 216772959 is about 600.7148507535.

The spelling of 216772959 in words is "two hundred sixteen million, seven hundred seventy-two thousand, nine hundred fifty-nine".