216465163 has 4 divisors (see below), whose sum is σ = 217844080. Its totient is φ = 215086248.

The previous prime is 216465113. The next prime is 216465203. The reversal of 216465163 is 361564612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216465163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216465113) 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, 689223 + ... + 689536.

It is an arithmetic number, because the mean of its divisors is an integer number (54461020).

Almost surely, 2^216465163 is an apocalyptic number.

216465163 is a deficient number, since it is larger than the sum of its proper divisors (1378917).

216465163 is a wasteful number, since it uses less digits than its factorization.

216465163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378916.

The product of its digits is 25920, while the sum is 34.

The square root of 216465163 is about 14712.7551124866. The cubic root of 216465163 is about 600.4303976707.

The spelling of 216465163 in words is "two hundred sixteen million, four hundred sixty-five thousand, one hundred sixty-three".