686420200 has 24 divisors (see below), whose sum is σ = 1595927430. Its totient is φ = 274568000.

The previous prime is 686420191. The next prime is 686420213. The reversal of 686420200 is 2024686.

686420200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 265103524 + 421316676 = 16282^2 + 20526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1715851 + ... + 1716250.

Almost surely, 2^686420200 is an apocalyptic number.

It is an amenable number.

686420200 is an abundant number, since it is smaller than the sum of its proper divisors (909507230).

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

686420200 is a wasteful number, since it uses less digits than its factorization.

686420200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432117 (or 3432108 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 686420200 is about 26199.6221346797. The cubic root of 686420200 is about 882.1247726019.

Adding to 686420200 its reverse (2024686), we get a palindrome (688444886).

The spelling of 686420200 in words is "six hundred eighty-six million, four hundred twenty thousand, two hundred".