686107400 has 48 divisors (see below), whose sum is σ = 1740223440. Its totient is φ = 249492800.

The previous prime is 686107397. The next prime is 686107417. The reversal of 686107400 is 4701686.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153734 + ... + 158133.

It is an arithmetic number, because the mean of its divisors is an integer number (36254655).

Almost surely, 2^686107400 is an apocalyptic number.

It is an amenable number.

686107400 is an abundant number, since it is smaller than the sum of its proper divisors (1054116040).

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

686107400 is a wasteful number, since it uses less digits than its factorization.

686107400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311894 (or 311885 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 686107400 is about 26193.6519027034. The cubic root of 686107400 is about 881.9907582120.

The spelling of 686107400 in words is "six hundred eighty-six million, one hundred seven thousand, four hundred".