216675164 has 12 divisors (see below), whose sum is σ = 399138600. Its totient is φ = 102635568.

The previous prime is 216675163. The next prime is 216675187. The reversal of 216675164 is 461576612.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216675163) 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, 1425419 + ... + 1425570.

It is an arithmetic number, because the mean of its divisors is an integer number (33261550).

Almost surely, 2^216675164 is an apocalyptic number.

It is an amenable number.

216675164 is a deficient number, since it is larger than the sum of its proper divisors (182463436).

216675164 is a wasteful number, since it uses less digits than its factorization.

216675164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851012 (or 2851010 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 216675164 is about 14719.8900811113. The cubic root of 216675164 is about 600.6245016225.

The spelling of 216675164 in words is "two hundred sixteen million, six hundred seventy-five thousand, one hundred sixty-four".