717660864 has 112 divisors (see below), whose sum is σ = 2121408000. Its totient is φ = 237904128.

The previous prime is 717660859. The next prime is 717660869. The reversal of 717660864 is 468066717.

It is an interprime number because it is at equal distance from previous prime (717660859) and next prime (717660869).

It is not an unprimeable number, because it can be changed into a prime (717660869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342829 + ... + 344915.

Almost surely, 2^717660864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 717660864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060704000).

717660864 is an abundant number, since it is smaller than the sum of its proper divisors (1403747136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

717660864 is a wasteful number, since it uses less digits than its factorization.

717660864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307 (or 2291 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 717660864 is about 26789.1930449575. The cubic root of 717660864 is about 895.3092837855.

The spelling of 717660864 in words is "seven hundred seventeen million, six hundred sixty thousand, eight hundred sixty-four".