164894664 has 32 divisors (see below), whose sum is σ = 449713440. Its totient is φ = 49968000.

The previous prime is 164894647. The next prime is 164894671. The reversal of 164894664 is 466498461.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 312037 + ... + 312564.

It is an arithmetic number, because the mean of its divisors is an integer number (14053545).

Almost surely, 2^164894664 is an apocalyptic number.

It is an amenable number.

164894664 is an abundant number, since it is smaller than the sum of its proper divisors (284818776).

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

164894664 is a wasteful number, since it uses less digits than its factorization.

164894664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624621 (or 624617 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 164894664 is about 12841.1317258254. The cubic root of 164894664 is about 548.3639137137.

The spelling of 164894664 in words is "one hundred sixty-four million, eight hundred ninety-four thousand, six hundred sixty-four".