556631665 has 8 divisors (see below), whose sum is σ = 679279680. Its totient is φ = 437757552.

The previous prime is 556631659. The next prime is 556631683. The reversal of 556631665 is 566136655.

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

It is a cyclic number.

It is not a de Polignac number, because 556631665 - 2¹¹ = 556629617 is a prime.

It is an unprimeable number.

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, 943149 + ... + 943738.

It is an arithmetic number, because the mean of its divisors is an integer number (84909960).

Almost surely, 2^556631665 is an apocalyptic number.

It is an amenable number.

556631665 is a deficient number, since it is larger than the sum of its proper divisors (122648015).

556631665 is a wasteful number, since it uses less digits than its factorization.

556631665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886951.

The product of its digits is 486000, while the sum is 43.

The square root of 556631665 is about 23593.0427244983. The cubic root of 556631665 is about 822.6011319246.

The spelling of 556631665 in words is "five hundred fifty-six million, six hundred thirty-one thousand, six hundred sixty-five".