3691868 has 12 divisors (see below), whose sum is σ = 6741840. Its totient is φ = 1765632.

The previous prime is 3691859. The next prime is 3691913. The reversal of 3691868 is 8681963.

It is a happy number.

3691868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 19973 + ... + 20156.

It is an arithmetic number, because the mean of its divisors is an integer number (561820).

Almost surely, 2^3691868 is an apocalyptic number.

It is an amenable number.

3691868 is a deficient number, since it is larger than the sum of its proper divisors (3049972).

3691868 is a wasteful number, since it uses less digits than its factorization.

3691868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40156 (or 40154 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 3691868 is about 1921.4234306888. The cubic root of 3691868 is about 154.5546425071.

The spelling of 3691868 in words is "three million, six hundred ninety-one thousand, eight hundred sixty-eight".