6981867 has 12 divisors (see below), whose sum is σ = 10320024. Its totient is φ = 4546080.

The previous prime is 6981859. The next prime is 6981889. The reversal of 6981867 is 7681896.

It is a happy number.

It is not a de Polignac number, because 6981867 - 2³ = 6981859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6981847) 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, 8634 + ... + 9407.

It is an arithmetic number, because the mean of its divisors is an integer number (860002).

Almost surely, 2^6981867 is an apocalyptic number.

6981867 is a deficient number, since it is larger than the sum of its proper divisors (3338157).

6981867 is a wasteful number, since it uses less digits than its factorization.

6981867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18090 (or 18087 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 6981867 is about 2642.3222740612. The cubic root of 6981867 is about 191.1277983921.

The spelling of 6981867 in words is "six million, nine hundred eighty-one thousand, eight hundred sixty-seven".