3287861 has 2 divisors, whose sum is σ = 3287862. Its totient is φ = 3287860.

The previous prime is 3287833. The next prime is 3287881. The reversal of 3287861 is 1687823.

3287861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1976836 + 1311025 = 1406^2 + 1145^2 .

It is an emirp because it is prime and its reverse (1687823) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3287861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3287821) 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, 1643930 + 1643931.

It is an arithmetic number, because the mean of its divisors is an integer number (1643931).

Almost surely, 2^3287861 is an apocalyptic number.

It is an amenable number.

3287861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3287861 is an equidigital number, since it uses as much as digits as its factorization.

3287861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 3287861 is about 1813.2459844158. The cubic root of 3287861 is about 148.6977793767.

The spelling of 3287861 in words is "three million, two hundred eighty-seven thousand, eight hundred sixty-one".