568302661 has 2 divisors, whose sum is σ = 568302662. Its totient is φ = 568302660.

The previous prime is 568302641. The next prime is 568302671. The reversal of 568302661 is 166203865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394221025 + 174081636 = 19855^2 + 13194^2 .

It is a cyclic number.

It is not a de Polignac number, because 568302661 - 2²³ = 559914053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 568302661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (568302601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284151330 + 284151331.

It is an arithmetic number, because the mean of its divisors is an integer number (284151331).

Almost surely, 2^568302661 is an apocalyptic number.

It is an amenable number.

568302661 is a deficient number, since it is larger than the sum of its proper divisors (1).

568302661 is an equidigital number, since it uses as much as digits as its factorization.

568302661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 568302661 is about 23839.0994167146. The cubic root of 568302661 is about 828.3106204837.

The spelling of 568302661 in words is "five hundred sixty-eight million, three hundred two thousand, six hundred sixty-one".