856814 has 16 divisors (see below), whose sum is σ = 1500000. Its totient is φ = 366912.

The previous prime is 856813. The next prime is 856831. The reversal of 856814 is 418658.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 856814.

It is not an unprimeable number, because it can be changed into a prime (856811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (93750).

2⁸⁵⁶⁸¹⁴ is an apocalyptic number.

856814 is a deficient number, since it is larger than the sum of its proper divisors (643186).

856814 is a wasteful number, since it uses less digits than its factorization.

856814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1258 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 856814 is about 925.6424795784. The cubic root of 856814 is about 94.9792752575.

The spelling of 856814 in words is "eight hundred fifty-six thousand, eight hundred fourteen".