6881090 has 24 divisors (see below), whose sum is σ = 13162932. Its totient is φ = 2589440.

The previous prime is 6881087. The next prime is 6881093. The reversal of 6881090 is 901886.

It is an interprime number because it is at equal distance from previous prime (6881087) and next prime (6881093).

It can be written as a sum of positive squares in 6 ways, for example, as 2399401 + 4481689 = 1549^2 + 2117^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6881093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1700 + ... + 4080.

Almost surely, 2^6881090 is an apocalyptic number.

6881090 is a deficient number, since it is larger than the sum of its proper divisors (6281842).

6881090 is a wasteful number, since it uses less digits than its factorization.

6881090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 6881090 is about 2623.1831807939. The cubic root of 6881090 is about 190.2037518753.

The spelling of 6881090 in words is "six million, eight hundred eighty-one thousand, ninety".