3686651 has 2 divisors, whose sum is σ = 3686652. Its totient is φ = 3686650.

The previous prime is 3686629. The next prime is 3686663. The reversal of 3686651 is 1566863.

3686651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3686651 - 2⁶ = 3686587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3686621) 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, 1843325 + 1843326.

It is an arithmetic number, because the mean of its divisors is an integer number (1843326).

Almost surely, 2^3686651 is an apocalyptic number.

3686651 is a deficient number, since it is larger than the sum of its proper divisors (1).

3686651 is an equidigital number, since it uses as much as digits as its factorization.

3686651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 3686651 is about 1920.0653634707. The cubic root of 3686651 is about 154.4818075024.

The spelling of 3686651 in words is "three million, six hundred eighty-six thousand, six hundred fifty-one".