216764059 has 16 divisors (see below), whose sum is σ = 237724416. Its totient is φ = 196761600.

The previous prime is 216764017. The next prime is 216764069. The reversal of 216764059 is 950467612.

It is a cyclic number.

It is not a de Polignac number, because 216764059 - 2⁷ = 216763931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216764069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221379 + ... + 222355.

It is an arithmetic number, because the mean of its divisors is an integer number (14857776).

Almost surely, 2^216764059 is an apocalyptic number.

216764059 is a deficient number, since it is larger than the sum of its proper divisors (20960357).

216764059 is a wasteful number, since it uses less digits than its factorization.

216764059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 216764059 is about 14722.9093252658. The cubic root of 216764059 is about 600.7066295016.

The spelling of 216764059 in words is "two hundred sixteen million, seven hundred sixty-four thousand, fifty-nine".