566501666 has 8 divisors (see below), whose sum is σ = 850153644. Its totient is φ = 283117120.

The previous prime is 566501629. The next prime is 566501711. The reversal of 566501666 is 666105665.

It can be written as a sum of positive squares in 2 ways, for example, as 547326025 + 19175641 = 23395^2 + 4379^2 .

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, 61475 + ... + 70086.

Almost surely, 2^566501666 is an apocalyptic number.

566501666 is a deficient number, since it is larger than the sum of its proper divisors (283651978).

566501666 is a wasteful number, since it uses less digits than its factorization.

566501666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133716.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 566501666 is about 23801.2954689445. The cubic root of 566501666 is about 827.4347011145.

The spelling of 566501666 in words is "five hundred sixty-six million, five hundred one thousand, six hundred sixty-six".