566064491 has 4 divisors (see below), whose sum is σ = 579870984. Its totient is φ = 552258000.

The previous prime is 566064481. The next prime is 566064497. The reversal of 566064491 is 194460665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-566064491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 13806451 = 566064491 / (5 + 6 + 6 + 0 + 6 + 4 + 4 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566064497) 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, 6903185 + ... + 6903266.

It is an arithmetic number, because the mean of its divisors is an integer number (144967746).

Almost surely, 2^566064491 is an apocalyptic number.

566064491 is a deficient number, since it is larger than the sum of its proper divisors (13806493).

566064491 is a wasteful number, since it uses less digits than its factorization.

566064491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13806492.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 566064491 is about 23792.1098475944. The cubic root of 566064491 is about 827.2217997950.

The spelling of 566064491 in words is "five hundred sixty-six million, sixty-four thousand, four hundred ninety-one".