165656264 has 8 divisors (see below), whose sum is σ = 310605510. Its totient is φ = 82828128.

The previous prime is 165656221. The next prime is 165656273. The reversal of 165656264 is 462656561.

165656264 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 157000900 + 8655364 = 12530^2 + 2942^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10353509 + ... + 10353524.

Almost surely, 2^165656264 is an apocalyptic number.

It is an amenable number.

165656264 is a deficient number, since it is larger than the sum of its proper divisors (144949246).

165656264 is a wasteful number, since it uses less digits than its factorization.

165656264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20707039 (or 20707035 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 165656264 is about 12870.7522701667. The cubic root of 165656264 is about 549.2068611954.

The spelling of 165656264 in words is "one hundred sixty-five million, six hundred fifty-six thousand, two hundred sixty-four".