686339196 has 24 divisors (see below), whose sum is σ = 1644741840. Its totient is φ = 222596352.

The previous prime is 686339191. The next prime is 686339237. The reversal of 686339196 is 691933686.

686339196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×686339196² = 942122983931852832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686339191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772461 + ... + 773348.

It is an arithmetic number, because the mean of its divisors is an integer number (68530910).

Almost surely, 2^686339196 is an apocalyptic number.

It is an amenable number.

686339196 is an abundant number, since it is smaller than the sum of its proper divisors (958402644).

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

686339196 is a wasteful number, since it uses less digits than its factorization.

686339196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545853 (or 1545851 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 51.

The square root of 686339196 is about 26198.0761889113. The cubic root of 686339196 is about 882.0900715805.

The spelling of 686339196 in words is "six hundred eighty-six million, three hundred thirty-nine thousand, one hundred ninety-six".