5678987 has 4 divisors (see below), whose sum is σ = 5763816. Its totient is φ = 5594160.

The previous prime is 5678957. The next prime is 5678989. The reversal of 5678987 is 7898765.

It is a happy number.

5678987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

5678987 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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 5678987 - 2⁶ = 5678923 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5678989) 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, 42314 + ... + 42447.

It is an arithmetic number, because the mean of its divisors is an integer number (1440954).

Almost surely, 2^5678987 is an apocalyptic number.

5678987 is a deficient number, since it is larger than the sum of its proper divisors (84829).

5678987 is an equidigital number, since it uses as much as digits as its factorization.

5678987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84828.

The product of its digits is 846720, while the sum is 50.

The square root of 5678987 is about 2383.0625254072. The cubic root of 5678987 is about 178.4118205383.

The spelling of 5678987 in words is "five million, six hundred seventy-eight thousand, nine hundred eighty-seven".