566649969 has 8 divisors (see below), whose sum is σ = 756513792. Its totient is φ = 377276400.

The previous prime is 566649953. The next prime is 566649991. The reversal of 566649969 is 969946665.

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

It is not a de Polignac number, because 566649969 - 2⁴ = 566649953 is a prime.

It is a super-2 number, since 2×566649969² = 642184374735401922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (566649169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119857 + ... + 124494.

It is an arithmetic number, because the mean of its divisors is an integer number (94564224).

Almost surely, 2^566649969 is an apocalyptic number.

It is an amenable number.

566649969 is a deficient number, since it is larger than the sum of its proper divisors (189863823).

566649969 is a wasteful number, since it uses less digits than its factorization.

566649969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245127.

The product of its digits is 18895680, while the sum is 60.

The square root of 566649969 is about 23804.4107047413. The cubic root of 566649969 is about 827.5068988086.

The spelling of 566649969 in words is "five hundred sixty-six million, six hundred forty-nine thousand, nine hundred sixty-nine".