556990669 has 8 divisors (see below), whose sum is σ = 598062528. Its totient is φ = 516841920.

The previous prime is 556990663. The next prime is 556990697. The reversal of 556990669 is 966099655.

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 556990669 - 2³ = 556990661 is a prime.

It is a super-2 number, since 2×556990669² = 620477210706135122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556990661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229527 + ... + 231940.

It is an arithmetic number, because the mean of its divisors is an integer number (74757816).

Almost surely, 2^556990669 is an apocalyptic number.

It is an amenable number.

556990669 is a deficient number, since it is larger than the sum of its proper divisors (41071859).

556990669 is a wasteful number, since it uses less digits than its factorization.

556990669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461555.

The product of its (nonzero) digits is 3936600, while the sum is 55.

The square root of 556990669 is about 23600.6497580045. The cubic root of 556990669 is about 822.7779416230. Note that the first 3 decimals are identical.

The spelling of 556990669 in words is "five hundred fifty-six million, nine hundred ninety thousand, six hundred sixty-nine".