164858565 has 16 divisors (see below), whose sum is σ = 265104000. Its totient is φ = 87481152.

The previous prime is 164858513. The next prime is 164858579. The reversal of 164858565 is 565858461.

164858565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164858565 - 2⁷ = 164858437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24630 + ... + 30599.

It is an arithmetic number, because the mean of its divisors is an integer number (16569000).

Almost surely, 2^164858565 is an apocalyptic number.

164858565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164858565 is a deficient number, since it is larger than the sum of its proper divisors (100245435).

164858565 is a wasteful number, since it uses less digits than its factorization.

164858565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55436.

The product of its digits is 1152000, while the sum is 48.

The square root of 164858565 is about 12839.7260484794. The cubic root of 164858565 is about 548.3238945622.

The spelling of 164858565 in words is "one hundred sixty-four million, eight hundred fifty-eight thousand, five hundred sixty-five".