3366991 has 2 divisors, whose sum is σ = 3366992. Its totient is φ = 3366990.

The previous prime is 3366989. The next prime is 3367027. The reversal of 3366991 is 1996633.

3366991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3366991 - 2¹ = 3366989 is a prime.

It is a super-2 number, since 2×3366991² = 22673256788162, which contains 22 as substring.

Together with 3366989, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3366991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3366911) 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, 1683495 + 1683496.

It is an arithmetic number, because the mean of its divisors is an integer number (1683496).

Almost surely, 2^3366991 is an apocalyptic number.

3366991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3366991 is an equidigital number, since it uses as much as digits as its factorization.

3366991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 37.

The square root of 3366991 is about 1834.9362386742. The cubic root of 3366991 is about 149.8812541691.

The spelling of 3366991 in words is "three million, three hundred sixty-six thousand, nine hundred ninety-one".