556740 has 48 divisors (see below), whose sum is σ = 1733760. Its totient is φ = 148320.

The previous prime is 556727. The next prime is 556741. The reversal of 556740 is 47655.

556740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (36120).

2⁵⁵⁶⁷⁴⁰ 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 556740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866880).

556740 is an abundant number, since it is smaller than the sum of its proper divisors (1177020).

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

556740 is a wasteful number, since it uses less digits than its factorization.

556740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 556740 is about 746.1501189439. The cubic root of 556740 is about 82.2654494988.

It can be divided in two parts, 556 and 740, that added together give a 4-th power (1296 = 6⁴).

The spelling of 556740 in words is "five hundred fifty-six thousand, seven hundred forty".