164505646 has 8 divisors (see below), whose sum is σ = 250138944. Its totient is φ = 81126000.

The previous prime is 164505619. The next prime is 164505707. The reversal of 164505646 is 646505461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 563230 + ... + 563521.

It is an arithmetic number, because the mean of its divisors is an integer number (31267368).

Almost surely, 2^164505646 is an apocalyptic number.

164505646 is a deficient number, since it is larger than the sum of its proper divisors (85633298).

164505646 is a wasteful number, since it uses less digits than its factorization.

164505646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126826.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 164505646 is about 12825.9754404879. The cubic root of 164505646 is about 547.9323424206.

The spelling of 164505646 in words is "one hundred sixty-four million, five hundred five thousand, six hundred forty-six".