6889659 has 16 divisors (see below), whose sum is σ = 10783488. Its totient is φ = 3830112.

The previous prime is 6889643. The next prime is 6889661. The reversal of 6889659 is 9569886.

6889659 = 695² + 696² + ... + 708².

6889659 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6889659 - 2⁴ = 6889643 is a prime.

It is a super-2 number, since 2×6889659² = 94934802272562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6889639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3657 + ... + 5210.

It is an arithmetic number, because the mean of its divisors is an integer number (673968).

Almost surely, 2^6889659 is an apocalyptic number.

6889659 is a deficient number, since it is larger than the sum of its proper divisors (3893829).

6889659 is a wasteful number, since it uses less digits than its factorization.

6889659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8914.

The product of its digits is 933120, while the sum is 51.

The square root of 6889659 is about 2624.8159935508. The cubic root of 6889659 is about 190.2826725049.

The spelling of 6889659 in words is "six million, eight hundred eighty-nine thousand, six hundred fifty-nine".