4006687 has 2 divisors, whose sum is σ = 4006688. Its totient is φ = 4006686.

The previous prime is 4006661. The next prime is 4006699. The reversal of 4006687 is 7866004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4006687 - 2¹⁵ = 3973919 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4006637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2003343 + 2003344.

It is an arithmetic number, because the mean of its divisors is an integer number (2003344).

Almost surely, 2^4006687 is an apocalyptic number.

4006687 is a deficient number, since it is larger than the sum of its proper divisors (1).

4006687 is an equidigital number, since it uses as much as digits as its factorization.

4006687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 4006687 is about 2001.6710518964. The cubic root of 4006687 is about 158.8285138730.

The spelling of 4006687 in words is "four million, six thousand, six hundred eighty-seven".