3372821 has 2 divisors, whose sum is σ = 3372822. Its totient is φ = 3372820.

The previous prime is 3372799. The next prime is 3372839. The reversal of 3372821 is 1282733.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3276100 + 96721 = 1810^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 3372821 - 2⁶ = 3372757 is a prime.

It is a super-2 number, since 2×3372821² = 22751842996082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3372841) 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, 1686410 + 1686411.

It is an arithmetic number, because the mean of its divisors is an integer number (1686411).

Almost surely, 2^3372821 is an apocalyptic number.

It is an amenable number.

3372821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3372821 is an equidigital number, since it uses as much as digits as its factorization.

3372821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 3372821 is about 1836.5241626507. The cubic root of 3372821 is about 149.9677115687.

The spelling of 3372821 in words is "three million, three hundred seventy-two thousand, eight hundred twenty-one".