213656164 has 24 divisors (see below), whose sum is σ = 385645568. Its totient is φ = 103511520.

The previous prime is 213656161. The next prime is 213656171. The reversal of 213656164 is 461656312.

213656164 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

213656164 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (213656161) 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, 16954 + ... + 26734.

Almost surely, 2^213656164 is an apocalyptic number.

It is an amenable number.

213656164 is a deficient number, since it is larger than the sum of its proper divisors (171989404).

213656164 is a wasteful number, since it uses less digits than its factorization.

213656164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955 (or 9953 counting only the distinct ones).

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

The square root of 213656164 is about 14616.9820414475. The cubic root of 213656164 is about 597.8218840677.

The spelling of 213656164 in words is "two hundred thirteen million, six hundred fifty-six thousand, one hundred sixty-four".