265620164 has 12 divisors (see below), whose sum is σ = 480864300. Its totient is φ = 128230368.

The previous prime is 265620163. The next prime is 265620167. The reversal of 265620164 is 461026562.

265620164 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 72965764 + 192654400 = 8542^2 + 13880^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 265620164.

It is not an unprimeable number, because it can be changed into a prime (265620161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144799 + ... + 1145030.

It is an arithmetic number, because the mean of its divisors is an integer number (40072025).

Almost surely, 2^265620164 is an apocalyptic number.

It is an amenable number.

265620164 is a deficient number, since it is larger than the sum of its proper divisors (215244136).

265620164 is a wasteful number, since it uses less digits than its factorization.

265620164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289862 (or 2289860 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 265620164 is about 16297.8576506239. The cubic root of 265620164 is about 642.8164965530.

The spelling of 265620164 in words is "two hundred sixty-five million, six hundred twenty thousand, one hundred sixty-four".