3591871 has 2 divisors, whose sum is σ = 3591872. Its totient is φ = 3591870.

The previous prime is 3591869. The next prime is 3591949. The reversal of 3591871 is 1781953.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3591871 - 2¹ = 3591869 is a prime.

Together with 3591869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3591851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1795935 + 1795936.

It is an arithmetic number, because the mean of its divisors is an integer number (1795936).

Almost surely, 2^3591871 is an apocalyptic number.

3591871 is a deficient number, since it is larger than the sum of its proper divisors (1).

3591871 is an equidigital number, since it uses as much as digits as its factorization.

3591871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 3591871 is about 1895.2232058520. The cubic root of 3591871 is about 153.1464415900.

The spelling of 3591871 in words is "three million, five hundred ninety-one thousand, eight hundred seventy-one".