686048900 has 36 divisors (see below), whose sum is σ = 1525045620. Its totient is φ = 267724800.

The previous prime is 686048887. The next prime is 686048917. The reversal of 686048900 is 9840686.

It can be written as a sum of positive squares in 6 ways, for example, as 208975936 + 477072964 = 14456^2 + 21842^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79565 + ... + 87764.

Almost surely, 2^686048900 is an apocalyptic number.

It is an amenable number.

686048900 is an abundant number, since it is smaller than the sum of its proper divisors (838996720).

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

686048900 is a wasteful number, since it uses less digits than its factorization.

686048900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167384 (or 167377 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 686048900 is about 26192.5351961203. The cubic root of 686048900 is about 881.9656902582.

The spelling of 686048900 in words is "six hundred eighty-six million, forty-eight thousand, nine hundred".