264640717 has 8 divisors (see below), whose sum is σ = 305681472. Its totient is φ = 226430400.

The previous prime is 264640709. The next prime is 264640729. The reversal of 264640717 is 717046462.

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 264640717 - 2³ = 264640709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264640777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707409 + ... + 707782.

It is an arithmetic number, because the mean of its divisors is an integer number (38210184).

Almost surely, 2^264640717 is an apocalyptic number.

It is an amenable number.

264640717 is a deficient number, since it is larger than the sum of its proper divisors (41040755).

264640717 is a wasteful number, since it uses less digits than its factorization.

264640717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415219.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 264640717 is about 16267.7815635691. The cubic root of 264640717 is about 642.0254168695.

The spelling of 264640717 in words is "two hundred sixty-four million, six hundred forty thousand, seven hundred seventeen".