6981137 has 4 divisors (see below), whose sum is σ = 6995520. Its totient is φ = 6966756.

The previous prime is 6981133. The next prime is 6981157. The reversal of 6981137 is 7311896.

6981137 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6981137 - 2² = 6981133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6981097 and 6981106.

It is not an unprimeable number, because it can be changed into a prime (6981133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6437 + ... + 7442.

It is an arithmetic number, because the mean of its divisors is an integer number (1748880).

Almost surely, 2^6981137 is an apocalyptic number.

It is an amenable number.

6981137 is a deficient number, since it is larger than the sum of its proper divisors (14383).

6981137 is a wasteful number, since it uses less digits than its factorization.

6981137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14382.

The product of its digits is 9072, while the sum is 35.

The square root of 6981137 is about 2642.1841343858. The cubic root of 6981137 is about 191.1211369382.

The spelling of 6981137 in words is "six million, nine hundred eighty-one thousand, one hundred thirty-seven".