717980065 has 16 divisors (see below), whose sum is σ = 955313856. Its totient is φ = 513604800.

The previous prime is 717980059. The next prime is 717980077. The reversal of 717980065 is 560089717.

It is not a de Polignac number, because 717980065 - 2⁵ = 717980033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103647 + ... + 110356.

It is an arithmetic number, because the mean of its divisors is an integer number (59707116).

Almost surely, 2^717980065 is an apocalyptic number.

It is an amenable number.

717980065 is a deficient number, since it is larger than the sum of its proper divisors (237333791).

717980065 is a wasteful number, since it uses less digits than its factorization.

717980065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214080.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 717980065 is about 26795.1500275703. The cubic root of 717980065 is about 895.4420025822.

The spelling of 717980065 in words is "seven hundred seventeen million, nine hundred eighty thousand, sixty-five".