566314991 has 4 divisors (see below), whose sum is σ = 617798184. Its totient is φ = 514831800.

The previous prime is 566314963. The next prime is 566315011. The reversal of 566314991 is 199413665.

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

It is a cyclic number.

It is not a de Polignac number, because 566314991 - 2¹⁰ = 566313967 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 (566313991) 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, 25741580 + ... + 25741601.

It is an arithmetic number, because the mean of its divisors is an integer number (154449546).

Almost surely, 2^566314991 is an apocalyptic number.

566314991 is a deficient number, since it is larger than the sum of its proper divisors (51483193).

566314991 is a wasteful number, since it uses less digits than its factorization.

566314991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51483192.

The product of its digits is 174960, while the sum is 44.

The square root of 566314991 is about 23797.3736155904. The cubic root of 566314991 is about 827.3438050346.

The spelling of 566314991 in words is "five hundred sixty-six million, three hundred fourteen thousand, nine hundred ninety-one".