3206813 has 2 divisors, whose sum is σ = 3206814. Its totient is φ = 3206812.

The previous prime is 3206809. The next prime is 3206837. The reversal of 3206813 is 3186023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2393209 + 813604 = 1547^2 + 902^2 .

It is an emirp because it is prime and its reverse (3186023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3206813 - 2² = 3206809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3206843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1603406 + 1603407.

It is an arithmetic number, because the mean of its divisors is an integer number (1603407).

Almost surely, 2^3206813 is an apocalyptic number.

It is an amenable number.

3206813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3206813 is an equidigital number, since it uses as much as digits as its factorization.

3206813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3206813 is about 1790.7576608799. The cubic root of 3206813 is about 147.4657662580.

The spelling of 3206813 in words is "three million, two hundred six thousand, eight hundred thirteen".