264662865 has 12 divisors (see below), whose sum is σ = 458749044. Its totient is φ = 141153504.

The previous prime is 264662861. The next prime is 264662873. The reversal of 264662865 is 568266462.

It can be written as a sum of positive squares in 2 ways, for example, as 64496961 + 200165904 = 8031^2 + 14148^2 .

It is not a de Polignac number, because 264662865 - 2² = 264662861 is a prime.

It is a super-2 number, since 2×264662865² = 140092864220016450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5881397 = 264662865 / (2 + 6 + 4 + 6 + 6 + 2 + 8 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 264662865.

It is not an unprimeable number, because it can be changed into a prime (264662861) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 2940654 + ... + 2940743.

It is an arithmetic number, because the mean of its divisors is an integer number (38229087).

Almost surely, 2^264662865 is an apocalyptic number.

It is an amenable number.

264662865 is a deficient number, since it is larger than the sum of its proper divisors (194086179).

264662865 is a wasteful number, since it uses less digits than its factorization.

264662865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5881408 (or 5881405 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 264662865 is about 16268.4622813590. The cubic root of 264662865 is about 642.0433269155.

The spelling of 264662865 in words is "two hundred sixty-four million, six hundred sixty-two thousand, eight hundred sixty-five".