686682132 has 24 divisors (see below), whose sum is σ = 1602685056. Its totient is φ = 228833088.

The previous prime is 686682131. The next prime is 686682163. The reversal of 686682132 is 231286686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686682131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76168 + ... + 84704.

It is an arithmetic number, because the mean of its divisors is an integer number (66778544).

Almost surely, 2^686682132 is an apocalyptic number.

It is an amenable number.

686682132 is an abundant number, since it is smaller than the sum of its proper divisors (916002924).

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

686682132 is a wasteful number, since it uses less digits than its factorization.

686682132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15247 (or 15245 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 686682132 is about 26204.6204322825. The cubic root of 686682132 is about 882.2369620559.

The spelling of 686682132 in words is "six hundred eighty-six million, six hundred eighty-two thousand, one hundred thirty-two".