686795284 has 48 divisors (see below), whose sum is σ = 1429948800. Its totient is φ = 282393216.

The previous prime is 686795281. The next prime is 686795287. The reversal of 686795284 is 482597686.

686795284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (686795281) and next prime (686795287).

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686795281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129762 + ... + 134950.

It is an arithmetic number, because the mean of its divisors is an integer number (29790600).

Almost surely, 2^686795284 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 686795284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714974400).

686795284 is an abundant number, since it is smaller than the sum of its proper divisors (743153516).

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

686795284 is a wasteful number, since it uses less digits than its factorization.

686795284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5392 (or 5390 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The square root of 686795284 is about 26206.7793519158. The cubic root of 686795284 is about 882.2854179520.

The spelling of 686795284 in words is "six hundred eighty-six million, seven hundred ninety-five thousand, two hundred eighty-four".