265097664 has 112 divisors (see below), whose sum is σ = 839358240. Its totient is φ = 81561600.

The previous prime is 265097621. The next prime is 265097683. The reversal of 265097664 is 466790562.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16564 + ... + 28364.

It is an arithmetic number, because the mean of its divisors is an integer number (7494270).

Almost surely, 2^265097664 is an apocalyptic number.

265097664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265097664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419679120).

265097664 is an abundant number, since it is smaller than the sum of its proper divisors (574260576).

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

265097664 is a wasteful number, since it uses less digits than its factorization.

265097664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11835 (or 11819 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 265097664 is about 16281.8200456829. The cubic root of 265097664 is about 642.3947262503.

The spelling of 265097664 in words is "two hundred sixty-five million, ninety-seven thousand, six hundred sixty-four".