165776864 has 24 divisors (see below), whose sum is σ = 356044248. Its totient is φ = 75352960.

The previous prime is 165776837. The next prime is 165776869. The reversal of 165776864 is 468677561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165776869) by changing a digit.

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, 235127 + ... + 235830.

It is an arithmetic number, because the mean of its divisors is an integer number (14835177).

Almost surely, 2^165776864 is an apocalyptic number.

It is an amenable number.

165776864 is an abundant number, since it is smaller than the sum of its proper divisors (190267384).

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

165776864 is a wasteful number, since it uses less digits than its factorization.

165776864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470978 (or 470970 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 165776864 is about 12875.4364586215. The cubic root of 165776864 is about 549.3401055396.

The spelling of 165776864 in words is "one hundred sixty-five million, seven hundred seventy-six thousand, eight hundred sixty-four".