6996989 has 2 divisors, whose sum is σ = 6996990. Its totient is φ = 6996988.

The previous prime is 6996967. The next prime is 6997021. The reversal of 6996989 is 9896996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6916900 + 80089 = 2630^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 6996989 - 2⁸ = 6996733 is a prime.

It is a super-2 number, since 2×6996989² = 97915710132242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6996089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3498494 + 3498495.

It is an arithmetic number, because the mean of its divisors is an integer number (3498495).

Almost surely, 2^6996989 is an apocalyptic number.

It is an amenable number.

6996989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6996989 is an equidigital number, since it uses as much as digits as its factorization.

6996989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 56.

The square root of 6996989 is about 2645.1822243467. The cubic root of 6996989 is about 191.2656865542.

The spelling of 6996989 in words is "six million, nine hundred ninety-six thousand, nine hundred eighty-nine".