6691089 has 8 divisors (see below), whose sum is σ = 9054880. Its totient is φ = 4394016.

The previous prime is 6691079. The next prime is 6691093. The reversal of 6691089 is 9801966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6691089 - 2⁴ = 6691073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6691019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16444 + ... + 16845.

It is an arithmetic number, because the mean of its divisors is an integer number (1131860).

Almost surely, 2^6691089 is an apocalyptic number.

It is an amenable number.

6691089 is a deficient number, since it is larger than the sum of its proper divisors (2363791).

6691089 is a wasteful number, since it uses less digits than its factorization.

6691089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33359.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 6691089 is about 2586.7139385715. The cubic root of 6691089 is about 188.4367486611.

The spelling of 6691089 in words is "six million, six hundred ninety-one thousand, eighty-nine".