663925361 has 16 divisors (see below), whose sum is σ = 768942720. Its totient is φ = 566542080.

The previous prime is 663925349. The next prime is 663925363. The reversal of 663925361 is 163529366.

663925361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663925361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663925363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68180 + ... + 77306.

It is an arithmetic number, because the mean of its divisors is an integer number (48058920).

Almost surely, 2^663925361 is an apocalyptic number.

It is an amenable number.

663925361 is a deficient number, since it is larger than the sum of its proper divisors (105017359).

663925361 is a wasteful number, since it uses less digits than its factorization.

663925361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9544.

The product of its digits is 174960, while the sum is 41.

The square root of 663925361 is about 25766.7491352712. The cubic root of 663925361 is about 872.3814442515.

The spelling of 663925361 in words is "six hundred sixty-three million, nine hundred twenty-five thousand, three hundred sixty-one".