566266161 has 4 divisors (see below), whose sum is σ = 755021552. Its totient is φ = 377510772.

The previous prime is 566266159. The next prime is 566266171. The reversal of 566266161 is 161662665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 566266161 - 2¹ = 566266159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566266171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94377691 + ... + 94377696.

It is an arithmetic number, because the mean of its divisors is an integer number (188755388).

Almost surely, 2^566266161 is an apocalyptic number.

It is an amenable number.

566266161 is a deficient number, since it is larger than the sum of its proper divisors (188755391).

566266161 is a wasteful number, since it uses less digits than its factorization.

566266161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188755390.

The product of its digits is 77760, while the sum is 39.

The square root of 566266161 is about 23796.3476399216. The cubic root of 566266161 is about 827.3200253596.

The spelling of 566266161 in words is "five hundred sixty-six million, two hundred sixty-six thousand, one hundred sixty-one".