566506655 has 16 divisors (see below), whose sum is σ = 798656544. Its totient is φ = 380311680.

The previous prime is 566506649. The next prime is 566506669. The reversal of 566506655 is 556605665.

It is not a de Polignac number, because 566506655 - 2¹⁶ = 566441119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395444 + ... + 396873.

It is an arithmetic number, because the mean of its divisors is an integer number (49916034).

Almost surely, 2^566506655 is an apocalyptic number.

566506655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

566506655 is a deficient number, since it is larger than the sum of its proper divisors (232149889).

566506655 is a wasteful number, since it uses less digits than its factorization.

566506655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792346.

The product of its (nonzero) digits is 810000, while the sum is 44.

The square root of 566506655 is about 23801.4002739335. The cubic root of 566506655 is about 827.4371300921.

The spelling of 566506655 in words is "five hundred sixty-six million, five hundred six thousand, six hundred fifty-five".