164213656 has 16 divisors (see below), whose sum is σ = 324106200. Its totient is φ = 77785344.

The previous prime is 164213653. The next prime is 164213669. The reversal of 164213656 is 656312461.

164213656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164213656² = 53932249633772672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164213653) 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, 540025 + ... + 540328.

Almost surely, 2^164213656 is an apocalyptic number.

It is an amenable number.

164213656 is a deficient number, since it is larger than the sum of its proper divisors (159892544).

164213656 is a wasteful number, since it uses less digits than its factorization.

164213656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080378 (or 1080374 counting only the distinct ones).

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

The square root of 164213656 is about 12814.5876250467. The cubic root of 164213656 is about 547.6079654751.

The spelling of 164213656 in words is "one hundred sixty-four million, two hundred thirteen thousand, six hundred fifty-six".