686472 has 16 divisors (see below), whose sum is σ = 1716240. Its totient is φ = 228816.

The previous prime is 686453. The next prime is 686473. The reversal of 686472 is 274686.

It is not an unprimeable number, because it can be changed into a prime (686473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14278 + ... + 14325.

It is an arithmetic number, because the mean of its divisors is an integer number (107265).

2⁶⁸⁶⁴⁷² is an apocalyptic number.

It is an amenable number.

686472 is an abundant number, since it is smaller than the sum of its proper divisors (1029768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686472 is a wasteful number, since it uses less digits than its factorization.

686472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28612 (or 28608 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 686472 is about 828.5360583584. The cubic root of 686472 is about 88.2146961592.

The spelling of 686472 in words is "six hundred eighty-six thousand, four hundred seventy-two".