6981437 has 4 divisors (see below), whose sum is σ = 7143840. Its totient is φ = 6819036.

The previous prime is 6981433. The next prime is 6981449. The reversal of 6981437 is 7341896.

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 6981437 - 2² = 6981433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6981437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6981433) 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 3 ways as a sum of consecutive naturals, for example, 81137 + ... + 81222.

It is an arithmetic number, because the mean of its divisors is an integer number (1785960).

Almost surely, 2^6981437 is an apocalyptic number.

It is an amenable number.

6981437 is a deficient number, since it is larger than the sum of its proper divisors (162403).

6981437 is a wasteful number, since it uses less digits than its factorization.

6981437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162402.

The product of its digits is 36288, while the sum is 38.

The square root of 6981437 is about 2642.2409049896. The cubic root of 6981437 is about 191.1238745782.

The spelling of 6981437 in words is "six million, nine hundred eighty-one thousand, four hundred thirty-seven".