556398 has 12 divisors (see below), whose sum is σ = 1205568. Its totient is φ = 185460.

The previous prime is 556373. The next prime is 556399. The reversal of 556398 is 893655.

556398 is a `hidden beast` number, since 5 + 563 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556399) by changing a digit.

556398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15438 + ... + 15473.

It is an arithmetic number, because the mean of its divisors is an integer number (100464).

2⁵⁵⁶³⁹⁸ is an apocalyptic number.

556398 is an abundant number, since it is smaller than the sum of its proper divisors (649170).

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

556398 is a wasteful number, since it uses less digits than its factorization.

556398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30919 (or 30916 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 556398 is about 745.9209073354. The cubic root of 556398 is about 82.2486010916.

The spelling of 556398 in words is "five hundred fifty-six thousand, three hundred ninety-eight".