6889669 has 4 divisors (see below), whose sum is σ = 6976960. Its totient is φ = 6802380.

The previous prime is 6889661. The next prime is 6889679. The reversal of 6889669 is 9669886.

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 6889669 - 2³ = 6889661 is a prime.

It is a super-2 number, since 2×6889669² = 94935077859122, which contains 22 as substring.

It is a Duffinian number.

6889669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6889661) 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, 43527 + ... + 43684.

It is an arithmetic number, because the mean of its divisors is an integer number (1744240).

Almost surely, 2^6889669 is an apocalyptic number.

It is an amenable number.

6889669 is a deficient number, since it is larger than the sum of its proper divisors (87291).

6889669 is an equidigital number, since it uses as much as digits as its factorization.

6889669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87290.

The product of its digits is 1119744, while the sum is 52.

The square root of 6889669 is about 2624.8178984455. The cubic root of 6889669 is about 190.2827645668.

The spelling of 6889669 in words is "six million, eight hundred eighty-nine thousand, six hundred sixty-nine".