685124 has 24 divisors (see below), whose sum is σ = 1366848. Its totient is φ = 297440.

The previous prime is 685123. The next prime is 685141. The reversal of 685124 is 421586.

685124 = 41² + 42² + ... + 128².

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 685093 and 685102.

It is not an unprimeable number, because it can be changed into a prime (685123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674 + ... + 1350.

It is an arithmetic number, because the mean of its divisors is an integer number (56952).

2⁶⁸⁵¹²⁴ is an apocalyptic number.

It is an amenable number.

685124 is a deficient number, since it is larger than the sum of its proper divisors (681724).

685124 is a wasteful number, since it uses less digits than its factorization.

685124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 713 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 685124 is about 827.7221756121. The cubic root of 685124 is about 88.1569169972.

The spelling of 685124 in words is "six hundred eighty-five thousand, one hundred twenty-four".