568900649 has 2 divisors, whose sum is σ = 568900650. Its totient is φ = 568900648.

The previous prime is 568900589. The next prime is 568900667. The reversal of 568900649 is 946009865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 552579049 + 16321600 = 23507^2 + 4040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-568900649 is a prime.

It is not a weakly prime, because it can be changed into another prime (568900669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284450324 + 284450325.

It is an arithmetic number, because the mean of its divisors is an integer number (284450325).

Almost surely, 2^568900649 is an apocalyptic number.

It is an amenable number.

568900649 is a deficient number, since it is larger than the sum of its proper divisors (1).

568900649 is an equidigital number, since it uses as much as digits as its factorization.

568900649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 568900649 is about 23851.6382875475. The cubic root of 568900649 is about 828.6010444754.

The spelling of 568900649 in words is "five hundred sixty-eight million, nine hundred thousand, six hundred forty-nine".