264640715 has 8 divisors (see below), whose sum is σ = 317795280. Its totient is φ = 211561632.

The previous prime is 264640709. The next prime is 264640729. The reversal of 264640715 is 517046462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264640715 - 2¹⁰ = 264639691 is a prime.

It is a super-2 number, since 2×264640715² = 140069416071422450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10844 + ... + 25433.

It is an arithmetic number, because the mean of its divisors is an integer number (39724410).

Almost surely, 2^264640715 is an apocalyptic number.

264640715 is a deficient number, since it is larger than the sum of its proper divisors (53154565).

264640715 is a wasteful number, since it uses less digits than its factorization.

264640715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37741.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 264640715 is about 16267.7815020979. The cubic root of 264640715 is about 642.0254152521.

The spelling of 264640715 in words is "two hundred sixty-four million, six hundred forty thousand, seven hundred fifteen".