665714602490689 has 8 divisors (see below), whose sum is σ = 668753639527680. Its totient is φ = 662676045541296.

The previous prime is 665714602490671. The next prime is 665714602490741. The reversal of 665714602490689 is 986094206417566.

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 665714602490689 - 2⁹ = 665714602490177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665714602490659) 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, 117242119 + ... + 122789020.

It is an arithmetic number, because the mean of its divisors is an integer number (83594204940960).

Almost surely, 2^{665714602490689} is an apocalyptic number.

It is an amenable number.

665714602490689 is a deficient number, since it is larger than the sum of its proper divisors (3039037036991).

665714602490689 is a wasteful number, since it uses less digits than its factorization.

665714602490689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240043799.

The product of its (nonzero) digits is 940584960, while the sum is 73.

The spelling of 665714602490689 in words is "six hundred sixty-five trillion, seven hundred fourteen billion, six hundred two million, four hundred ninety thousand, six hundred eighty-nine".