557684 has 12 divisors (see below), whose sum is σ = 985824. Its totient is φ = 276024.

The previous prime is 557671. The next prime is 557693. The reversal of 557684 is 486755.

It is a super-2 number, since 2×557684² = 622022887712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

557684 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224 + ... + 1079.

It is an arithmetic number, because the mean of its divisors is an integer number (82152).

2⁵⁵⁷⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

557684 is a deficient number, since it is larger than the sum of its proper divisors (428140).

557684 is a wasteful number, since it uses less digits than its factorization.

557684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1412 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 557684 is about 746.7824315020. The cubic root of 557684 is about 82.3119192653.

It can be divided in two parts, 5 and 57684, that multiplied together give a triangular number (288420 = T₇₅₉).

The spelling of 557684 in words is "five hundred fifty-seven thousand, six hundred eighty-four".