3691087 has 2 divisors, whose sum is σ = 3691088. Its totient is φ = 3691086.

The previous prime is 3691043. The next prime is 3691147. The reversal of 3691087 is 7801963.

3691087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3691087 is a prime.

3691087 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3691007) 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, 1845543 + 1845544.

It is an arithmetic number, because the mean of its divisors is an integer number (1845544).

Almost surely, 2^3691087 is an apocalyptic number.

3691087 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691087 is an equidigital number, since it uses as much as digits as its factorization.

3691087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 3691087 is about 1921.2201851948. The cubic root of 3691087 is about 154.5437432651.

The spelling of 3691087 in words is "three million, six hundred ninety-one thousand, eighty-seven".