5666987 has 2 divisors, whose sum is σ = 5666988. Its totient is φ = 5666986.

The previous prime is 5666981. The next prime is 5667029. The reversal of 5666987 is 7896665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5666987 - 2⁴ = 5666971 is a prime.

It is a super-2 number, since 2×5666987² = 64229483316338, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (5666981) 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, 2833493 + 2833494.

It is an arithmetic number, because the mean of its divisors is an integer number (2833494).

Almost surely, 2^5666987 is an apocalyptic number.

5666987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666987 is an equidigital number, since it uses as much as digits as its factorization.

5666987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 5666987 is about 2380.5434253548. The cubic root of 5666987 is about 178.2860673836.

The spelling of 5666987 in words is "five million, six hundred sixty-six thousand, nine hundred eighty-seven".