6982421 has 2 divisors, whose sum is σ = 6982422. Its totient is φ = 6982420.

The previous prime is 6982411. The next prime is 6982429. The reversal of 6982421 is 1242896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4774225 + 2208196 = 2185^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 6982421 - 2⁶ = 6982357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6982429) 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 as a sum of consecutive naturals, namely, 3491210 + 3491211.

It is an arithmetic number, because the mean of its divisors is an integer number (3491211).

Almost surely, 2^6982421 is an apocalyptic number.

It is an amenable number.

6982421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6982421 is an equidigital number, since it uses as much as digits as its factorization.

6982421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 6982421 is about 2642.4271040087. The cubic root of 6982421 is about 191.1328534870.

The spelling of 6982421 in words is "six million, nine hundred eighty-two thousand, four hundred twenty-one".