164320656 has 20 divisors (see below), whose sum is σ = 424495152. Its totient is φ = 54773536.

The previous prime is 164320643. The next prime is 164320693. The reversal of 164320656 is 656023461.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711626 + ... + 1711721.

Almost surely, 2^164320656 is an apocalyptic number.

164320656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

164320656 is an abundant number, since it is smaller than the sum of its proper divisors (260174496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164320656 is a wasteful number, since it uses less digits than its factorization.

164320656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423358 (or 3423352 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 164320656 is about 12818.7618746898. The cubic root of 164320656 is about 547.7268783027.

The spelling of 164320656 in words is "one hundred sixty-four million, three hundred twenty thousand, six hundred fifty-six".