686276352 has 216 divisors, whose sum is σ = 2125228560. Its totient is φ = 212336640.

The previous prime is 686276341. The next prime is 686276389. The reversal of 686276352 is 253672686.

It is a happy number.

686276352 is a `hidden beast` number, since 6 + 8 + 6 + 2 + 7 + 635 + 2 = 666.

686276352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 686276298 and 686276307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2670208 + ... + 2670464.

Almost surely, 2^686276352 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 686276352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1062614280).

686276352 is an abundant number, since it is smaller than the sum of its proper divisors (1438952208).

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

686276352 is a wasteful number, since it uses less digits than its factorization.

686276352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 342 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 686276352 is about 26196.8767604079. The cubic root of 686276352 is about 882.0631481774.

The spelling of 686276352 in words is "six hundred eighty-six million, two hundred seventy-six thousand, three hundred fifty-two".