6859144 has 16 divisors (see below), whose sum is σ = 12888720. Its totient is φ = 3422160.

The previous prime is 6859123. The next prime is 6859159. The reversal of 6859144 is 4419586.

It is a happy 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, 6579 + ... + 7549.

It is an arithmetic number, because the mean of its divisors is an integer number (805545).

Almost surely, 2^6859144 is an apocalyptic number.

It is an amenable number.

6859144 is a deficient number, since it is larger than the sum of its proper divisors (6029576).

6859144 is a wasteful number, since it uses less digits than its factorization.

6859144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860 (or 1856 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 6859144 is about 2618.9967544844. The cubic root of 6859144 is about 190.0013296306.

It can be divided in two parts, 68591 and 44, that added together give a triangular number (68635 = T₃₇₀).

The spelling of 6859144 in words is "six million, eight hundred fifty-nine thousand, one hundred forty-four".