663313799 has 2 divisors, whose sum is σ = 663313800. Its totient is φ = 663313798.

The previous prime is 663313793. The next prime is 663313801. The reversal of 663313799 is 997313366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663313799 - 2⁸ = 663313543 is a prime.

Together with 663313801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663313793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331656899 + 331656900.

It is an arithmetic number, because the mean of its divisors is an integer number (331656900).

Almost surely, 2^663313799 is an apocalyptic number.

663313799 is a deficient number, since it is larger than the sum of its proper divisors (1).

663313799 is an equidigital number, since it uses as much as digits as its factorization.

663313799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 47.

The square root of 663313799 is about 25754.8791299823. The cubic root of 663313799 is about 872.1135028691.

The spelling of 663313799 in words is "six hundred sixty-three million, three hundred thirteen thousand, seven hundred ninety-nine".