164895566 has 64 divisors (see below), whose sum is σ = 299980800. Its totient is φ = 67132800.

The previous prime is 164895559. The next prime is 164895571. The reversal of 164895566 is 665598461.

It is a happy number.

164895566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 739331 + ... + 739553.

It is an arithmetic number, because the mean of its divisors is an integer number (4687200).

Almost surely, 2^164895566 is an apocalyptic number.

164895566 is a deficient number, since it is larger than the sum of its proper divisors (135085234).

164895566 is a wasteful number, since it uses less digits than its factorization.

164895566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its digits is 1555200, while the sum is 50.

The square root of 164895566 is about 12841.1668472923. The cubic root of 164895566 is about 548.3649135911.

The spelling of 164895566 in words is "one hundred sixty-four million, eight hundred ninety-five thousand, five hundred sixty-six".