686975848 has 64 divisors (see below), whose sum is σ = 1474396560. Its totient is φ = 297271296.

The previous prime is 686975833. The next prime is 686975909. The reversal of 686975848 is 848579686.

686975848 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 334963204 + 352012644 = 18302^2 + 18762^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595240 + ... + 596392.

Almost surely, 2^686975848 is an apocalyptic number.

686975848 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686975848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737198280).

686975848 is an abundant number, since it is smaller than the sum of its proper divisors (787420712).

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

686975848 is a wasteful number, since it uses less digits than its factorization.

686975848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 1522 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 61.

The square root of 686975848 is about 26210.2241119758. The cubic root of 686975848 is about 882.3627311527.

The spelling of 686975848 in words is "six hundred eighty-six million, nine hundred seventy-five thousand, eight hundred forty-eight".