686481204 has 48 divisors (see below), whose sum is σ = 1645995456. Its totient is φ = 222547200.

The previous prime is 686481203. The next prime is 686481221. The reversal of 686481204 is 402184686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686481203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168714 + ... + 172734.

It is an arithmetic number, because the mean of its divisors is an integer number (34291572).

Almost surely, 2^686481204 is an apocalyptic number.

It is an amenable number.

686481204 is an abundant number, since it is smaller than the sum of its proper divisors (959514252).

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

686481204 is a wasteful number, since it uses less digits than its factorization.

686481204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416 (or 4414 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 686481204 is about 26200.7863240781. The cubic root of 686481204 is about 882.1509040908.

The spelling of 686481204 in words is "six hundred eighty-six million, four hundred eighty-one thousand, two hundred four".