566861399 has 8 divisors (see below), whose sum is σ = 614511072. Its totient is φ = 519789600.

The previous prime is 566861377. The next prime is 566861431. The reversal of 566861399 is 993168665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 566861399 - 2¹⁶ = 566795863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 566861399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566861699) 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, 142424 + ... + 146349.

It is an arithmetic number, because the mean of its divisors is an integer number (76813884).

Almost surely, 2^566861399 is an apocalyptic number.

566861399 is a deficient number, since it is larger than the sum of its proper divisors (47649673).

566861399 is a wasteful number, since it uses less digits than its factorization.

566861399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288937.

The product of its digits is 2099520, while the sum is 53.

The square root of 566861399 is about 23808.8512742635. The cubic root of 566861399 is about 827.6098065630.

It can be divided in two parts, 56686 and 1399, that added together give a palindrome (58085).

The spelling of 566861399 in words is "five hundred sixty-six million, eight hundred sixty-one thousand, three hundred ninety-nine".