566555213 has 16 divisors (see below), whose sum is σ = 660790656. Its totient is φ = 475675200.

The previous prime is 566555203. The next prime is 566555257. The reversal of 566555213 is 312555665.

It is not a de Polignac number, because 566555213 - 2²⁰ = 565506637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566555203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389195 + ... + 390647.

It is an arithmetic number, because the mean of its divisors is an integer number (41299416).

Almost surely, 2^566555213 is an apocalyptic number.

566555213 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

566555213 is a deficient number, since it is larger than the sum of its proper divisors (94235443).

566555213 is a wasteful number, since it uses less digits than its factorization.

566555213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564.

The product of its digits is 135000, while the sum is 38.

The square root of 566555213 is about 23802.4203181105. The cubic root of 566555213 is about 827.4607706171.

The spelling of 566555213 in words is "five hundred sixty-six million, five hundred fifty-five thousand, two hundred thirteen".