556338663 has 24 divisors (see below), whose sum is σ = 813997392. Its totient is φ = 366121728.

The previous prime is 556338661. The next prime is 556338683. The reversal of 556338663 is 366833655.

556338663 is a `hidden beast` number, since 5 + 5 + 633 + 8 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 556338663 - 2¹ = 556338661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556338661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286845 + ... + 288777.

It is an arithmetic number, because the mean of its divisors is an integer number (33916558).

Almost surely, 2^556338663 is an apocalyptic number.

556338663 is a deficient number, since it is larger than the sum of its proper divisors (257658729).

556338663 is a wasteful number, since it uses less digits than its factorization.

556338663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335 (or 2332 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The square root of 556338663 is about 23586.8324070868. The cubic root of 556338663 is about 822.4567719018.

The spelling of 556338663 in words is "five hundred fifty-six million, three hundred thirty-eight thousand, six hundred sixty-three".