566660613 has 4 divisors (see below), whose sum is σ = 755547488. Its totient is φ = 377773740.

The previous prime is 566660599. The next prime is 566660629. The reversal of 566660613 is 316066665.

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 566660613 - 2⁵ = 566660581 is a prime.

It is a super-2 number, since 2×566660613² = 642208500651071538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566660113) 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, 94443433 + ... + 94443438.

It is an arithmetic number, because the mean of its divisors is an integer number (188886872).

Almost surely, 2^566660613 is an apocalyptic number.

It is an amenable number.

566660613 is a deficient number, since it is larger than the sum of its proper divisors (188886875).

566660613 is a wasteful number, since it uses less digits than its factorization.

566660613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188886874.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 566660613 is about 23804.6342757035. The cubic root of 566660613 is about 827.5120800955.

The spelling of 566660613 in words is "five hundred sixty-six million, six hundred sixty thousand, six hundred thirteen".