264156065 has 4 divisors (see below), whose sum is σ = 316987284. Its totient is φ = 211324848.

The previous prime is 264156043. The next prime is 264156077. The reversal of 264156065 is 560651462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92467456 + 171688609 = 9616^2 + 13103^2 .

It is a cyclic number.

It is not a de Polignac number, because 264156065 - 2¹² = 264151969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26415602 + ... + 26415611.

It is an arithmetic number, because the mean of its divisors is an integer number (79246821).

Almost surely, 2^264156065 is an apocalyptic number.

It is an amenable number.

264156065 is a deficient number, since it is larger than the sum of its proper divisors (52831219).

264156065 is an equidigital number, since it uses as much as digits as its factorization.

264156065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52831218.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 264156065 is about 16252.8786681006. The cubic root of 264156065 is about 641.6332511599.

The spelling of 264156065 in words is "two hundred sixty-four million, one hundred fifty-six thousand, sixty-five".