686452 has 24 divisors (see below), whose sum is σ = 1328096. Its totient is φ = 308448.

The previous prime is 686449. The next prime is 686453. The reversal of 686452 is 254686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686453) 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 in 7 ways as a sum of consecutive naturals, for example, 2083 + ... + 2389.

2⁶⁸⁶⁴⁵² is an apocalyptic number.

It is an amenable number.

686452 is a deficient number, since it is larger than the sum of its proper divisors (641644).

686452 is a wasteful number, since it uses less digits than its factorization.

686452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 365 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 686452 is about 828.5239887897. The cubic root of 686452 is about 88.2138394547.

The spelling of 686452 in words is "six hundred eighty-six thousand, four hundred fifty-two".