6881399 has 8 divisors (see below), whose sum is σ = 8056608. Its totient is φ = 5754240.

The previous prime is 6881389. The next prime is 6881417. The reversal of 6881399 is 9931886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6881399 - 2⁴ = 6881383 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11702 + ... + 12275.

It is an arithmetic number, because the mean of its divisors is an integer number (1007076).

Almost surely, 2^6881399 is an apocalyptic number.

6881399 is a deficient number, since it is larger than the sum of its proper divisors (1175209).

6881399 is a wasteful number, since it uses less digits than its factorization.

6881399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24025.

The product of its digits is 93312, while the sum is 44.

The square root of 6881399 is about 2623.2420780401. The cubic root of 6881399 is about 190.2065989087.

The spelling of 6881399 in words is "six million, eight hundred eighty-one thousand, three hundred ninety-nine".