566742861 has 12 divisors (see below), whose sum is σ = 819393120. Its totient is φ = 377475720.

The previous prime is 566742859. The next prime is 566742863. The reversal of 566742861 is 168247665.

566742861 is a `hidden beast` number, since 566 + 7 + 4 + 2 + 86 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (566742859) and next prime (566742863).

It is not a de Polignac number, because 566742861 - 2¹ = 566742859 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566742863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19041 + ... + 38678.

It is an arithmetic number, because the mean of its divisors is an integer number (68282760).

Almost surely, 2^566742861 is an apocalyptic number.

It is an amenable number.

566742861 is a deficient number, since it is larger than the sum of its proper divisors (252650259).

566742861 is a wasteful number, since it uses less digits than its factorization.

566742861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58816 (or 58813 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 566742861 is about 23806.3617757943. The cubic root of 566742861 is about 827.5521145943.

The spelling of 566742861 in words is "five hundred sixty-six million, seven hundred forty-two thousand, eight hundred sixty-one".