3806591 has 2 divisors, whose sum is σ = 3806592. Its totient is φ = 3806590.

The previous prime is 3806587. The next prime is 3806599. The reversal of 3806591 is 1956083.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3806591 - 2² = 3806587 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3806599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1903295 + 1903296.

It is an arithmetic number, because the mean of its divisors is an integer number (1903296).

Almost surely, 2^3806591 is an apocalyptic number.

3806591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3806591 is an equidigital number, since it uses as much as digits as its factorization.

3806591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 3806591 is about 1951.0486923703. The cubic root of 3806591 is about 156.1392439637.

The spelling of 3806591 in words is "three million, eight hundred six thousand, five hundred ninety-one".