3306991 has 2 divisors, whose sum is σ = 3306992. Its totient is φ = 3306990.

The previous prime is 3306977. The next prime is 3307033. The reversal of 3306991 is 1996033.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3306991 - 2¹¹ = 3304943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3306911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1653495 + 1653496.

It is an arithmetic number, because the mean of its divisors is an integer number (1653496).

Almost surely, 2^3306991 is an apocalyptic number.

3306991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3306991 is an equidigital number, since it uses as much as digits as its factorization.

3306991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 3306991 is about 1818.5134038549. The cubic root of 3306991 is about 148.9856148748.

The spelling of 3306991 in words is "three million, three hundred six thousand, nine hundred ninety-one".