566139213 has 42 divisors (see below), whose sum is σ = 866659374. Its totient is φ = 369643824.

The previous prime is 566139199. The next prime is 566139241. The reversal of 566139213 is 312931665.

566139213 is a `hidden beast` number, since 566 + 1 + 3 + 92 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 553049289 + 13089924 = 23517^2 + 3618^2 .

It is not a de Polignac number, because 566139213 - 2⁶ = 566139149 is a prime.

Its product of digits (29160) is a multiple of the sum of its prime divisors (243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566139263) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 3272395 + ... + 3272567.

It is an arithmetic number, because the mean of its divisors is an integer number (20634747).

Almost surely, 2^566139213 is an apocalyptic number.

It is an amenable number.

566139213 is a deficient number, since it is larger than the sum of its proper divisors (300520161).

566139213 is an frugal number, since it uses more digits than its factorization.

566139213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 243 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 566139213 is about 23793.6801062803. The cubic root of 566139213 is about 827.2581966772.

The spelling of 566139213 in words is "five hundred sixty-six million, one hundred thirty-nine thousand, two hundred thirteen".