686004208 has 40 divisors (see below), whose sum is σ = 1374662016. Its totient is φ = 331296000.

The previous prime is 686004199. The next prime is 686004217. The reversal of 686004208 is 802400686.

It is an interprime number because it is at equal distance from previous prime (686004199) and next prime (686004217).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346710 + ... + 348682.

Almost surely, 2^686004208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686004208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687331008).

686004208 is an abundant number, since it is smaller than the sum of its proper divisors (688657808).

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

686004208 is a wasteful number, since it uses less digits than its factorization.

686004208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 686004208 is about 26191.6820383877. The cubic root of 686004208 is about 881.9465382383.

The spelling of 686004208 in words is "six hundred eighty-six million, four thousand, two hundred eight".