686054882 has 6 divisors (see below), whose sum is σ = 1029137889. Its totient is φ = 343008920.

The previous prime is 686054857. The next prime is 686054899. The reversal of 686054882 is 288450686.

686054882 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 2 ways, for example, as 393268561 + 292786321 = 19831^2 + 17111^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18521.

It is a super-2 number, since 2×686054882² = 941342602232067848, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27782 + ... + 46302.

Almost surely, 2^686054882 is an apocalyptic number.

686054882 is a deficient number, since it is larger than the sum of its proper divisors (343083007).

686054882 is an frugal number, since it uses more digits than its factorization.

686054882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37044 (or 18523 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The square root of 686054882 is about 26192.6493887121. The cubic root of 686054882 is about 881.9682536826.

It can be divided in two parts, 6860 and 54882, that multiplied together give a triangular number (376490520 = T₂₇₄₄₀).

The spelling of 686054882 in words is "six hundred eighty-six million, fifty-four thousand, eight hundred eighty-two".