3665587 has 2 divisors, whose sum is σ = 3665588. Its totient is φ = 3665586.

The previous prime is 3665581. The next prime is 3665609. The reversal of 3665587 is 7855663.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3665587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3665581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832793 + 1832794.

It is an arithmetic number, because the mean of its divisors is an integer number (1832794).

Almost surely, 2^3665587 is an apocalyptic number.

3665587 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665587 is an equidigital number, since it uses as much as digits as its factorization.

3665587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 3665587 is about 1914.5722759927. The cubic root of 3665587 is about 154.1870303106.

The spelling of 3665587 in words is "three million, six hundred sixty-five thousand, five hundred eighty-seven".