568400663 has 2 divisors, whose sum is σ = 568400664. Its totient is φ = 568400662.

The previous prime is 568400647. The next prime is 568400681. The reversal of 568400663 is 366004865.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 568400663 - 2⁴ = 568400647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (568409663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284200331 + 284200332.

It is an arithmetic number, because the mean of its divisors is an integer number (284200332).

Almost surely, 2^568400663 is an apocalyptic number.

568400663 is a deficient number, since it is larger than the sum of its proper divisors (1).

568400663 is an equidigital number, since it uses as much as digits as its factorization.

568400663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 568400663 is about 23841.1548168288. The cubic root of 568400663 is about 828.3582309310.

The spelling of 568400663 in words is "five hundred sixty-eight million, four hundred thousand, six hundred sixty-three".