566401687 has 8 divisors (see below), whose sum is σ = 572034672. Its totient is φ = 560788800.

The previous prime is 566401679. The next prime is 566401727. The reversal of 566401687 is 786104665.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 566401687 - 2³ = 566401679 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 (566401487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55137 + ... + 64597.

It is an arithmetic number, because the mean of its divisors is an integer number (71504334).

Almost surely, 2^566401687 is an apocalyptic number.

566401687 is a deficient number, since it is larger than the sum of its proper divisors (5632985).

566401687 is a wasteful number, since it uses less digits than its factorization.

566401687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10049.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 566401687 is about 23799.1950914311. The cubic root of 566401687 is about 827.3860216689.

The spelling of 566401687 in words is "five hundred sixty-six million, four hundred one thousand, six hundred eighty-seven".