840681080 has 16 divisors (see below), whose sum is σ = 1891532520. Its totient is φ = 336272416.

The previous prime is 840681053. The next prime is 840681091. The reversal of 840681080 is 80186048.

840681080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 840681080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10508474 + ... + 10508553.

Almost surely, 2^840681080 is an apocalyptic number.

It is an amenable number.

840681080 is an abundant number, since it is smaller than the sum of its proper divisors (1050851440).

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

840681080 is a wasteful number, since it uses less digits than its factorization.

840681080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21017038 (or 21017034 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 840681080 is about 28994.5008579213. The cubic root of 840681080 is about 943.7937372534.

The spelling of 840681080 in words is "eight hundred forty million, six hundred eighty-one thousand, eighty".