566321013 has 6 divisors (see below), whose sum is σ = 818019254. Its totient is φ = 377547336.

The previous prime is 566320967. The next prime is 566321023. The reversal of 566321013 is 310123665.

566321013 is a `hidden beast` number, since 5 + 6 + 632 + 10 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 548402724 + 17918289 = 23418^2 + 4233^2 .

It is not a de Polignac number, because 566321013 - 2⁹ = 566320501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566321023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31462270 + ... + 31462287.

Almost surely, 2^566321013 is an apocalyptic number.

It is an amenable number.

566321013 is a deficient number, since it is larger than the sum of its proper divisors (251698241).

566321013 is a wasteful number, since it uses less digits than its factorization.

566321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62924563 (or 62924560 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 566321013 is about 23797.5001418216. The cubic root of 566321013 is about 827.3467375879.

Adding to 566321013 its reverse (310123665), we get a palindrome (876444678).

The spelling of 566321013 in words is "five hundred sixty-six million, three hundred twenty-one thousand, thirteen".