6386689 has 4 divisors (see below), whose sum is σ = 6522624. Its totient is φ = 6250756.

The previous prime is 6386687. The next prime is 6386711. The reversal of 6386689 is 9866836.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6386689 - 2¹ = 6386687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6386683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67897 + ... + 67990.

It is an arithmetic number, because the mean of its divisors is an integer number (1630656).

Almost surely, 2^6386689 is an apocalyptic number.

It is an amenable number.

6386689 is a deficient number, since it is larger than the sum of its proper divisors (135935).

6386689 is a wasteful number, since it uses less digits than its factorization.

6386689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135934.

The product of its digits is 373248, while the sum is 46.

The square root of 6386689 is about 2527.1899414171. The cubic root of 6386689 is about 185.5347469438.

The spelling of 6386689 in words is "six million, three hundred eighty-six thousand, six hundred eighty-nine".