686000199 has 32 divisors (see below), whose sum is σ = 959816704. Its totient is φ = 435456000.

The previous prime is 686000197. The next prime is 686000221. The reversal of 686000199 is 991000686.

It is not a de Polignac number, because 686000199 - 2¹ = 686000197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686000197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 913074 + ... + 913824.

It is an arithmetic number, because the mean of its divisors is an integer number (29994272).

Almost surely, 2^686000199 is an apocalyptic number.

686000199 is a deficient number, since it is larger than the sum of its proper divisors (273816505).

686000199 is a wasteful number, since it uses less digits than its factorization.

686000199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 686000199 is about 26191.6055063450. The cubic root of 686000199 is about 881.9448202068.

The spelling of 686000199 in words is "six hundred eighty-six million, one hundred ninety-nine", and thus it is an aban number.