265213564 has 24 divisors (see below), whose sum is σ = 578648448. Its totient is φ = 103329840.

The previous prime is 265213547. The next prime is 265213579. The reversal of 265213564 is 465312562.

It is a super-3 number, since 3×265213564³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430234 + ... + 430849.

It is an arithmetic number, because the mean of its divisors is an integer number (24110352).

Almost surely, 2^265213564 is an apocalyptic number.

It is an amenable number.

265213564 is an abundant number, since it is smaller than the sum of its proper divisors (313434884).

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

265213564 is a wasteful number, since it uses less digits than its factorization.

265213564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861105 (or 861103 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 265213564 is about 16285.3788411569. The cubic root of 265213564 is about 642.4883303709.

The spelling of 265213564 in words is "two hundred sixty-five million, two hundred thirteen thousand, five hundred sixty-four".