6981747 has 8 divisors (see below), whose sum is σ = 9856656. Its totient is φ = 4380672.

The previous prime is 6981739. The next prime is 6981749. The reversal of 6981747 is 7471896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6981747 - 2³ = 6981739 is a prime.

6981747 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6981699 and 6981708.

It is not an unprimeable number, because it can be changed into a prime (6981749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68398 + ... + 68499.

It is an arithmetic number, because the mean of its divisors is an integer number (1232082).

Almost surely, 2^6981747 is an apocalyptic number.

6981747 is a deficient number, since it is larger than the sum of its proper divisors (2874909).

6981747 is a wasteful number, since it uses less digits than its factorization.

6981747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136917.

The product of its digits is 84672, while the sum is 42.

The square root of 6981747 is about 2642.2995666654. The cubic root of 6981747 is about 191.1267033905.

The spelling of 6981747 in words is "six million, nine hundred eighty-one thousand, seven hundred forty-seven".