6881890 has 16 divisors (see below), whose sum is σ = 12479040. Its totient is φ = 2732400.

The previous prime is 6881873. The next prime is 6881893. The reversal of 6881890 is 981886.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6881893) 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, 1086 + ... + 3865.

It is an arithmetic number, because the mean of its divisors is an integer number (779940).

Almost surely, 2^6881890 is an apocalyptic number.

6881890 is a deficient number, since it is larger than the sum of its proper divisors (5597150).

6881890 is a wasteful number, since it uses less digits than its factorization.

6881890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 6881890 is about 2623.3356628537. The cubic root of 6881890 is about 190.2111226603.

The spelling of 6881890 in words is "six million, eight hundred eighty-one thousand, eight hundred ninety".