685434 has 16 divisors (see below), whose sum is σ = 1391040. Its totient is φ = 225120.

The previous prime is 685429. The next prime is 685453. The reversal of 685434 is 434586.

685434 is nontrivially palindromic in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379 + ... + 1230.

It is an arithmetic number, because the mean of its divisors is an integer number (86940).

2⁶⁸⁵⁴³⁴ is an apocalyptic number.

685434 is an abundant number, since it is smaller than the sum of its proper divisors (705606).

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

685434 is a wasteful number, since it uses less digits than its factorization.

685434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685.

The product of its digits is 11520, while the sum is 30.

The square root of 685434 is about 827.9094153348. The cubic root of 685434 is about 88.1702111958.

The spelling of 685434 in words is "six hundred eighty-five thousand, four hundred thirty-four".