3566987 has 4 divisors (see below), whose sum is σ = 3574056. Its totient is φ = 3559920.

The previous prime is 3566977. The next prime is 3566989. The reversal of 3566987 is 7896653.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3566987 - 2¹⁸ = 3304843 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3566989) 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 in 3 ways as a sum of consecutive naturals, for example, 2714 + ... + 3807.

It is an arithmetic number, because the mean of its divisors is an integer number (893514).

Almost surely, 2^3566987 is an apocalyptic number.

3566987 is a deficient number, since it is larger than the sum of its proper divisors (7069).

3566987 is an equidigital number, since it uses as much as digits as its factorization.

3566987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068.

The product of its digits is 272160, while the sum is 44.

The square root of 3566987 is about 1888.6468701163. The cubic root of 3566987 is about 152.7919624026.

The spelling of 3566987 in words is "three million, five hundred sixty-six thousand, nine hundred eighty-seven".