566143997 has 2 divisors, whose sum is σ = 566143998. Its totient is φ = 566143996.

The previous prime is 566143973. The next prime is 566144009. The reversal of 566143997 is 799341665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487040761 + 79103236 = 22069^2 + 8894^2 .

It is a cyclic number.

It is not a de Polignac number, because 566143997 - 2¹⁸ = 565881853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566143967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283071998 + 283071999.

It is an arithmetic number, because the mean of its divisors is an integer number (283071999).

Almost surely, 2^566143997 is an apocalyptic number.

It is an amenable number.

566143997 is a deficient number, since it is larger than the sum of its proper divisors (1).

566143997 is an equidigital number, since it uses as much as digits as its factorization.

566143997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 566143997 is about 23793.7806369648. The cubic root of 566143997 is about 827.2605268414.

The spelling of 566143997 in words is "five hundred sixty-six million, one hundred forty-three thousand, nine hundred ninety-seven".