556993368 has 128 divisors (see below), whose sum is σ = 1609113600. Its totient is φ = 178329600.

The previous prime is 556993363. The next prime is 556993373. The reversal of 556993368 is 863399655.

It is an interprime number because it is at equal distance from previous prime (556993363) and next prime (556993373).

It is a super-2 number, since 2×556993368² = 620483223991966848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556993361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1292113 + ... + 1292543.

It is an arithmetic number, because the mean of its divisors is an integer number (12571200).

Almost surely, 2^556993368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556993368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804556800).

556993368 is an abundant number, since it is smaller than the sum of its proper divisors (1052120232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556993368 is a wasteful number, since it uses less digits than its factorization.

556993368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 660 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 54.

The square root of 556993368 is about 23600.7069385644. The cubic root of 556993368 is about 822.7792705945.

The spelling of 556993368 in words is "five hundred fifty-six million, nine hundred ninety-three thousand, three hundred sixty-eight".