686367 has 16 divisors (see below), whose sum is σ = 1109760. Its totient is φ = 415800.

The previous prime is 686363. The next prime is 686417. The reversal of 686367 is 763686.

It is a happy number.

It is not a de Polignac number, because 686367 - 2² = 686363 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 686367.

It is not an unprimeable number, because it can be changed into a prime (686363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859 + ... + 1452.

It is an arithmetic number, because the mean of its divisors is an integer number (69360).

2⁶⁸⁶³⁶⁷ is an apocalyptic number.

686367 is a deficient number, since it is larger than the sum of its proper divisors (423393).

686367 is a wasteful number, since it uses less digits than its factorization.

686367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2325 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 686367 is about 828.4726911613. The cubic root of 686367 is about 88.2101982747.

The spelling of 686367 in words is "six hundred eighty-six thousand, three hundred sixty-seven".