556749 has 6 divisors (see below), whose sum is σ = 804206. Its totient is φ = 371160.

The previous prime is 556741. The next prime is 556753. The reversal of 556749 is 947655.

It can be written as a sum of positive squares in only one way, i.e., 455625 + 101124 = 675^2 + 318^2 .

It is not a de Polignac number, because 556749 - 2³ = 556741 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 30922 + ... + 30939.

2⁵⁵⁶⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

556749 is a deficient number, since it is larger than the sum of its proper divisors (247457).

556749 is a wasteful number, since it uses less digits than its factorization.

556749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61867 (or 61864 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 556749 is about 746.1561498775. The cubic root of 556749 is about 82.2658927848.

The spelling of 556749 in words is "five hundred fifty-six thousand, seven hundred forty-nine".