3688787 has 2 divisors, whose sum is σ = 3688788. Its totient is φ = 3688786.

The previous prime is 3688781. The next prime is 3688801. The reversal of 3688787 is 7878863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3688787 - 2¹⁰ = 3687763 is a prime.

It is not a weakly prime, because it can be changed into another prime (3688781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844393 + 1844394.

It is an arithmetic number, because the mean of its divisors is an integer number (1844394).

Almost surely, 2^3688787 is an apocalyptic number.

3688787 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688787 is an equidigital number, since it uses as much as digits as its factorization.

3688787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 47.

The square root of 3688787 is about 1920.6215139897. The cubic root of 3688787 is about 154.5116366919.

The spelling of 3688787 in words is "three million, six hundred eighty-eight thousand, seven hundred eighty-seven".