6984521 has 2 divisors, whose sum is σ = 6984522. Its totient is φ = 6984520.

The previous prime is 6984511. The next prime is 6984541. The reversal of 6984521 is 1254896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4145296 + 2839225 = 2036^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 6984521 - 2¹⁰ = 6983497 is a prime.

It is not a weakly prime, because it can be changed into another prime (6984511) 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, 3492260 + 3492261.

It is an arithmetic number, because the mean of its divisors is an integer number (3492261).

Almost surely, 2^6984521 is an apocalyptic number.

It is an amenable number.

6984521 is a deficient number, since it is larger than the sum of its proper divisors (1).

6984521 is an equidigital number, since it uses as much as digits as its factorization.

6984521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 6984521 is about 2642.8244360911. The cubic root of 6984521 is about 191.1520129715.

The spelling of 6984521 in words is "six million, nine hundred eighty-four thousand, five hundred twenty-one".