681486800 has 30 divisors (see below), whose sum is σ = 1637272998. Its totient is φ = 272594560.

The previous prime is 681486797. The next prime is 681486811. The reversal of 681486800 is 8684186.

It can be written as a sum of positive squares in 3 ways, for example, as 61277584 + 620209216 = 7828^2 + 24904^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 851459 + ... + 852258.

Almost surely, 2^681486800 is an apocalyptic number.

It is an amenable number.

681486800 is an abundant number, since it is smaller than the sum of its proper divisors (955786198).

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

681486800 is a wasteful number, since it uses less digits than its factorization.

681486800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703735 (or 1703724 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 681486800 is about 26105.3021434344. The cubic root of 681486800 is about 880.0063704773.

It can be divided in two parts, 681486 and 800, that added together give a palindrome (682286).

The spelling of 681486800 in words is "six hundred eighty-one million, four hundred eighty-six thousand, eight hundred".