265936864 has 12 divisors (see below), whose sum is σ = 523563264. Its totient is φ = 132968416.

The previous prime is 265936861. The next prime is 265936919. The reversal of 265936864 is 468639562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265936861) by changing a digit.

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 as a sum of consecutive naturals, namely, 4155232 + ... + 4155295.

It is an arithmetic number, because the mean of its divisors is an integer number (43630272).

Almost surely, 2^265936864 is an apocalyptic number.

It is an amenable number.

265936864 is a deficient number, since it is larger than the sum of its proper divisors (257626400).

265936864 is an equidigital number, since it uses as much as digits as its factorization.

265936864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8310537 (or 8310529 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The square root of 265936864 is about 16307.5707571667. The cubic root of 265936864 is about 643.0718726574.

The spelling of 265936864 in words is "two hundred sixty-five million, nine hundred thirty-six thousand, eight hundred sixty-four".