6840868 has 24 divisors (see below), whose sum is σ = 13116600. Its totient is φ = 3107328.

The previous prime is 6840857. The next prime is 6840871. The reversal of 6840868 is 8680486.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 399424 + 6441444 = 632^2 + 2538^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6840868.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238 + ... + 3706.

It is an arithmetic number, because the mean of its divisors is an integer number (546525).

Almost surely, 2^6840868 is an apocalyptic number.

6840868 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6840868 is a deficient number, since it is larger than the sum of its proper divisors (6275732).

6840868 is a wasteful number, since it uses less digits than its factorization.

6840868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519 (or 3517 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 6840868 is about 2615.5053049076. The cubic root of 6840868 is about 189.8324284300.

The spelling of 6840868 in words is "six million, eight hundred forty thousand, eight hundred sixty-eight".