685514 has 4 divisors (see below), whose sum is σ = 1028274. Its totient is φ = 342756.

The previous prime is 685513. The next prime is 685519. The reversal of 685514 is 415586.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 537289 + 148225 = 733^2 + 385^2 .

It is not an unprimeable number, because it can be changed into a prime (685511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171377 + ... + 171380.

2⁶⁸⁵⁵¹⁴ is an apocalyptic number.

685514 is a deficient number, since it is larger than the sum of its proper divisors (342760).

685514 is a wasteful number, since it uses less digits than its factorization.

685514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342759.

The product of its digits is 4800, while the sum is 29.

The square root of 685514 is about 827.9577283896. The cubic root of 685514 is about 88.1736413060.

The spelling of 685514 in words is "six hundred eighty-five thousand, five hundred fourteen".