3227681 has 2 divisors, whose sum is σ = 3227682. Its totient is φ = 3227680.

The previous prime is 3227669. The next prime is 3227683. The reversal of 3227681 is 1867223.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2611456 + 616225 = 1616^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 3227681 - 2⁶ = 3227617 is a prime.

It is a super-2 number, since 2×3227681² = 20835849275522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 3227683, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3227683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1613840 + 1613841.

It is an arithmetic number, because the mean of its divisors is an integer number (1613841).

Almost surely, 2^3227681 is an apocalyptic number.

It is an amenable number.

3227681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3227681 is an equidigital number, since it uses as much as digits as its factorization.

3227681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 3227681 is about 1796.5747966617. The cubic root of 3227681 is about 147.7849475901.

The spelling of 3227681 in words is "three million, two hundred twenty-seven thousand, six hundred eighty-one".