686050 has 12 divisors (see below), whose sum is σ = 1276146. Its totient is φ = 274400.

The previous prime is 686041. The next prime is 686051. The reversal of 686050 is 50686.

686050 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 3 ways, for example, as 408321 + 277729 = 639^2 + 527^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (686051) by changing a digit.

686050 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6811 + ... + 6910.

2⁶⁸⁶⁰⁵⁰ is an apocalyptic number.

686050 is a deficient number, since it is larger than the sum of its proper divisors (590096).

686050 is a wasteful number, since it uses less digits than its factorization.

686050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13733 (or 13728 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 686050 is about 828.2813531645. The cubic root of 686050 is about 88.1966161635.

It can be divided in two parts, 6860 and 50, that multiplied together give a cube (343000 = 70³).

The spelling of 686050 in words is "six hundred eighty-six thousand, fifty".