663568375 has 8 divisors (see below), whose sum is σ = 828133488. Its totient is φ = 530854600.

The previous prime is 663568363. The next prime is 663568379. The reversal of 663568375 is 573865366.

It is a de Polignac number, because none of the positive numbers 2^k-663568375 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663568379) 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, 2654149 + ... + 2654398.

It is an arithmetic number, because the mean of its divisors is an integer number (103516686).

Almost surely, 2^663568375 is an apocalyptic number.

663568375 is a deficient number, since it is larger than the sum of its proper divisors (164565113).

663568375 is an equidigital number, since it uses as much as digits as its factorization.

663568375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308562 (or 5308552 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 49.

The square root of 663568375 is about 25759.8209427007. The cubic root of 663568375 is about 872.2250593050.

The spelling of 663568375 in words is "six hundred sixty-three million, five hundred sixty-eight thousand, three hundred seventy-five".