6868919 has 4 divisors (see below), whose sum is σ = 6874896. Its totient is φ = 6862944.

The previous prime is 6868913. The next prime is 6868921. The reversal of 6868919 is 9198686.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6868919 - 2⁴ = 6868903 is a prime.

It is a super-2 number, since 2×6868919² = 94364096457122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868913) 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, 659 + ... + 3764.

It is an arithmetic number, because the mean of its divisors is an integer number (1718724).

Almost surely, 2^6868919 is an apocalyptic number.

6868919 is a deficient number, since it is larger than the sum of its proper divisors (5977).

6868919 is a wasteful number, since it uses less digits than its factorization.

6868919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5976.

The product of its digits is 186624, while the sum is 47.

The square root of 6868919 is about 2620.8622626914. The cubic root of 6868919 is about 190.0915440670.

The spelling of 6868919 in words is "six million, eight hundred sixty-eight thousand, nine hundred nineteen".