717960649 has 8 divisors (see below), whose sum is σ = 820728128. Its totient is φ = 615243600.

The previous prime is 717960641. The next prime is 717960653. The reversal of 717960649 is 946069717.

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 717960649 - 2³ = 717960641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (717960641) 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, 25654 + ... + 45760.

It is an arithmetic number, because the mean of its divisors is an integer number (102591016).

Almost surely, 2^717960649 is an apocalyptic number.

It is an amenable number.

717960649 is a deficient number, since it is larger than the sum of its proper divisors (102767479).

717960649 is a wasteful number, since it uses less digits than its factorization.

717960649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25215.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 717960649 is about 26794.7877207490. The cubic root of 717960649 is about 895.4339308360.

The spelling of 717960649 in words is "seven hundred seventeen million, nine hundred sixty thousand, six hundred forty-nine".