681484850 has 12 divisors (see below), whose sum is σ = 1267561914. Its totient is φ = 272593920.

The previous prime is 681484847. The next prime is 681484877. The reversal of 681484850 is 58484186.

It can be written as a sum of positive squares in 3 ways, for example, as 343991209 + 337493641 = 18547^2 + 18371^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6814799 + ... + 6814898.

Almost surely, 2^681484850 is an apocalyptic number.

681484850 is a deficient number, since it is larger than the sum of its proper divisors (586077064).

681484850 is a wasteful number, since it uses less digits than its factorization.

681484850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13629709 (or 13629704 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 681484850 is about 26105.2647946731. The cubic root of 681484850 is about 880.0055311291.

The spelling of 681484850 in words is "six hundred eighty-one million, four hundred eighty-four thousand, eight hundred fifty".