6856494 has 16 divisors (see below), whose sum is σ = 13747968. Its totient is φ = 2279672.

The previous prime is 6856483. The next prime is 6856517. The reversal of 6856494 is 4946586.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579 + ... + 4025.

It is an arithmetic number, because the mean of its divisors is an integer number (859248).

Almost surely, 2^6856494 is an apocalyptic number.

6856494 is an abundant number, since it is smaller than the sum of its proper divisors (6891474).

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

6856494 is a wasteful number, since it uses less digits than its factorization.

6856494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919.

The product of its digits is 207360, while the sum is 42.

The square root of 6856494 is about 2618.4907866937. The cubic root of 6856494 is about 189.9768577538.

The spelling of 6856494 in words is "six million, eight hundred fifty-six thousand, four hundred ninety-four".