681990883 has 16 divisors (see below), whose sum is σ = 848736000. Its totient is φ = 534697632.

The previous prime is 681990863. The next prime is 681990899. The reversal of 681990883 is 388099186.

681990883 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 681990883 - 2¹⁷ = 681859811 is a prime.

It is a super-2 number, since 2×681990883² = 930223128990239378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 681990883.

It is not an unprimeable number, because it can be changed into a prime (681990833) 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, 84553 + ... + 92266.

It is an arithmetic number, because the mean of its divisors is an integer number (53046000).

Almost surely, 2^681990883 is an apocalyptic number.

681990883 is a deficient number, since it is larger than the sum of its proper divisors (166745117).

681990883 is a wasteful number, since it uses less digits than its factorization.

681990883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176874.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 681990883 is about 26114.9551598313. The cubic root of 681990883 is about 880.2232917358.

The spelling of 681990883 in words is "six hundred eighty-one million, nine hundred ninety thousand, eight hundred eighty-three".