6858724 has 12 divisors (see below), whose sum is σ = 12037564. Its totient is φ = 3419424.

The previous prime is 6858721. The next prime is 6858737. The reversal of 6858724 is 4278586.

It can be written as a sum of positive squares in 2 ways, for example, as 1876900 + 4981824 = 1370^2 + 2232^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6858721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807 + ... + 3790.

Almost surely, 2^6858724 is an apocalyptic number.

It is an amenable number.

6858724 is a deficient number, since it is larger than the sum of its proper divisors (5178840).

6858724 is a wasteful number, since it uses less digits than its factorization.

6858724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974 (or 4972 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 6858724 is about 2618.9165698815. The cubic root of 6858724 is about 189.9974514894.

It can be divided in two parts, 685 and 8724, that added together give a square (9409 = 97²).

The spelling of 6858724 in words is "six million, eight hundred fifty-eight thousand, seven hundred twenty-four".