840457683 has 24 divisors (see below), whose sum is σ = 1308459152. Its totient is φ = 516777408.

The previous prime is 840457669. The next prime is 840457691. The reversal of 840457683 is 386754048.

840457683 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 840457683 - 2⁸ = 840457427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840457603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195960 + ... + 200202.

Almost surely, 2^840457683 is an apocalyptic number.

840457683 is a deficient number, since it is larger than the sum of its proper divisors (468001469).

840457683 is a wasteful number, since it uses less digits than its factorization.

840457683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955 (or 5952 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 840457683 is about 28990.6481990314. The cubic root of 840457683 is about 943.7101306900.

The spelling of 840457683 in words is "eight hundred forty million, four hundred fifty-seven thousand, six hundred eighty-three".