663116499 has 12 divisors (see below), whose sum is σ = 971326512. Its totient is φ = 435850800.

The previous prime is 663116491. The next prime is 663116507. The reversal of 663116499 is 994611366.

663116499 is a `hidden beast` number, since 6 + 631 + 1 + 6 + 4 + 9 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (663116491) and next prime (663116507).

It is not a de Polignac number, because 663116499 - 2³ = 663116491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663116491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 518232 + ... + 519509.

It is an arithmetic number, because the mean of its divisors is an integer number (80943876).

Almost surely, 2^663116499 is an apocalyptic number.

663116499 is a deficient number, since it is larger than the sum of its proper divisors (308210013).

663116499 is a wasteful number, since it uses less digits than its factorization.

663116499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037818 (or 1037815 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 663116499 is about 25751.0485029251. The cubic root of 663116499 is about 872.0270254193.

The spelling of 663116499 in words is "six hundred sixty-three million, one hundred sixteen thousand, four hundred ninety-nine".