686433 has 24 divisors (see below), whose sum is σ = 1055488. Its totient is φ = 396000.

The previous prime is 686423. The next prime is 686437. The reversal of 686433 is 334686.

686433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 686433 - 2⁴ = 686417 is a prime.

It is an Ulam number.

It is a Curzon number.

686433 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 686433.

It is not an unprimeable number, because it can be changed into a prime (686437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11223 + ... + 11283.

2⁶⁸⁶⁴³³ is an apocalyptic number.

It is an amenable number.

686433 is a deficient number, since it is larger than the sum of its proper divisors (369055).

686433 is a wasteful number, since it uses less digits than its factorization.

686433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 106 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 686433 is about 828.5125225366. The cubic root of 686433 is about 88.2130255699.

The spelling of 686433 in words is "six hundred eighty-six thousand, four hundred thirty-three".