663713713 has 4 divisors (see below), whose sum is σ = 714768628. Its totient is φ = 612658800.

The previous prime is 663713707. The next prime is 663713717. The reversal of 663713713 is 317317366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132319009 + 531394704 = 11503^2 + 23052^2 .

It is a de Polignac number, because none of the positive numbers 2^k-663713713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663713717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25527438 + ... + 25527463.

It is an arithmetic number, because the mean of its divisors is an integer number (178692157).

Almost surely, 2^663713713 is an apocalyptic number.

It is an amenable number.

663713713 is a deficient number, since it is larger than the sum of its proper divisors (51054915).

663713713 is a wasteful number, since it uses less digits than its factorization.

663713713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51054914.

The product of its digits is 47628, while the sum is 37.

The square root of 663713713 is about 25762.6418094108. The cubic root of 663713713 is about 872.2887343266.

The spelling of 663713713 in words is "six hundred sixty-three million, seven hundred thirteen thousand, seven hundred thirteen".