6899868 has 36 divisors (see below), whose sum is σ = 17581200. Its totient is φ = 2281536.

The previous prime is 6899863. The next prime is 6899891. The reversal of 6899868 is 8689986.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6899863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4233 + ... + 5631.

Almost surely, 2^6899868 is an apocalyptic number.

It is an amenable number.

6899868 is an abundant number, since it is smaller than the sum of its proper divisors (10681332).

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

6899868 is a wasteful number, since it uses less digits than its factorization.

6899868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 1541 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 6899868 is about 2626.7599814220. The cubic root of 6899868 is about 190.3766121851.

The spelling of 6899868 in words is "six million, eight hundred ninety-nine thousand, eight hundred sixty-eight".