663358913 has 16 divisors (see below), whose sum is σ = 814320000. Its totient is φ = 538662096.

The previous prime is 663358909. The next prime is 663358961. The reversal of 663358913 is 319853366.

It is not a de Polignac number, because 663358913 - 2² = 663358909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663358013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44378 + ... + 57411.

It is an arithmetic number, because the mean of its divisors is an integer number (50895000).

Almost surely, 2^663358913 is an apocalyptic number.

It is an amenable number.

663358913 is a deficient number, since it is larger than the sum of its proper divisors (150961087).

663358913 is a wasteful number, since it uses less digits than its factorization.

663358913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101829 (or 101815 counting only the distinct ones).

The product of its digits is 349920, while the sum is 44.

The square root of 663358913 is about 25755.7549491371. The cubic root of 663358913 is about 872.1332741230.

The spelling of 663358913 in words is "six hundred sixty-three million, three hundred fifty-eight thousand, nine hundred thirteen".