566998899665 has 16 divisors (see below), whose sum is σ = 743400374400. Its totient is φ = 411725464320.

The previous prime is 566998899661. The next prime is 566998899683.

566998899665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 566998899665 - 2² = 566998899661 is a prime.

It is a super-2 number, since 2×566998899665² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (566998899661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7931240 + ... + 8002409.

It is an arithmetic number, because the mean of its divisors is an integer number (46462523400).

Almost surely, 2^566998899665 is an apocalyptic number.

566998899665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

566998899665 is a deficient number, since it is larger than the sum of its proper divisors (176401474735).

566998899665 is a wasteful number, since it uses less digits than its factorization.

566998899665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15934312.

The product of its digits is 13604889600, while the sum is 86.

The spelling of 566998899665 in words is "five hundred sixty-six billion, nine hundred ninety-eight million, eight hundred ninety-nine thousand, six hundred sixty-five".