565921994 has 8 divisors (see below), whose sum is σ = 926054208. Its totient is φ = 257237260.

The previous prime is 565921987. The next prime is 565922017. The reversal of 565921994 is 499129565.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12861842 + ... + 12861885.

It is an arithmetic number, because the mean of its divisors is an integer number (115756776).

Almost surely, 2^565921994 is an apocalyptic number.

565921994 is a deficient number, since it is larger than the sum of its proper divisors (360132214).

565921994 is a wasteful number, since it uses less digits than its factorization.

565921994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25723740.

The product of its digits is 874800, while the sum is 50.

The square root of 565921994 is about 23789.1150318796. The cubic root of 565921994 is about 827.1523810160.

The spelling of 565921994 in words is "five hundred sixty-five million, nine hundred twenty-one thousand, nine hundred ninety-four".