663314731 has 8 divisors (see below), whose sum is σ = 681177600. Its totient is φ = 645688680.

The previous prime is 663314683. The next prime is 663314737. The reversal of 663314731 is 137413366.

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 663314731 - 2⁹ = 663314219 is a prime.

It is a super-2 number, since 2×663314731² = 879972864723204722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663314737) 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, 53521 + ... + 64738.

It is an arithmetic number, because the mean of its divisors is an integer number (85147200).

Almost surely, 2^663314731 is an apocalyptic number.

663314731 is a deficient number, since it is larger than the sum of its proper divisors (17862869).

663314731 is a wasteful number, since it uses less digits than its factorization.

663314731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118409.

The product of its digits is 27216, while the sum is 34.

The square root of 663314731 is about 25754.8972236350. The cubic root of 663314731 is about 872.1139113281.

The spelling of 663314731 in words is "six hundred sixty-three million, three hundred fourteen thousand, seven hundred thirty-one".