6981497 has 2 divisors, whose sum is σ = 6981498. Its totient is φ = 6981496.

The previous prime is 6981463. The next prime is 6981503. The reversal of 6981497 is 7941896.

6981497 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3701776 + 3279721 = 1924^2 + 1811^2 .

It is a cyclic number.

It is not a de Polignac number, because 6981497 - 2⁶ = 6981433 is a prime.

It is a super-2 number, since 2×6981497² = 97482600722018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6981697) 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 as a sum of consecutive naturals, namely, 3490748 + 3490749.

It is an arithmetic number, because the mean of its divisors is an integer number (3490749).

Almost surely, 2^6981497 is an apocalyptic number.

It is an amenable number.

6981497 is a deficient number, since it is larger than the sum of its proper divisors (1).

6981497 is an equidigital number, since it uses as much as digits as its factorization.

6981497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 6981497 is about 2642.2522589639. The cubic root of 6981497 is about 191.1244220968.

The spelling of 6981497 in words is "six million, nine hundred eighty-one thousand, four hundred ninety-seven".