840866874 has 8 divisors (see below), whose sum is σ = 1681733760. Its totient is φ = 280288956.

The previous prime is 840866837. The next prime is 840866881. The reversal of 840866874 is 478668048.

840866874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

840866874 is an admirable number.

It is a Curzon 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, 70072234 + ... + 70072245.

It is an arithmetic number, because the mean of its divisors is an integer number (210216720).

Almost surely, 2^840866874 is an apocalyptic number.

840866874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

840866874 is a wasteful number, since it uses less digits than its factorization.

840866874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140144484.

The product of its (nonzero) digits is 2064384, while the sum is 51.

The square root of 840866874 is about 28997.7046332981. The cubic root of 840866874 is about 943.8632595735.

The spelling of 840866874 in words is "eight hundred forty million, eight hundred sixty-six thousand, eight hundred seventy-four".