6691000869 has 24 divisors (see below), whose sum is σ = 11454555840. Its totient is φ = 3823428096.

The previous prime is 6691000867. The next prime is 6691000873. The reversal of 6691000869 is 9680001966.

It is not a de Polignac number, because 6691000869 - 2¹ = 6691000867 is a prime.

It is a super-2 number, since 2×6691000869² = 89538985257917510322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691000867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1965084 + ... + 1968485.

It is an arithmetic number, because the mean of its divisors is an integer number (477273160).

Almost surely, 2^6691000869 is an apocalyptic number.

It is an amenable number.

6691000869 is a deficient number, since it is larger than the sum of its proper divisors (4763554971).

6691000869 is an equidigital number, since it uses as much as digits as its factorization.

6691000869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933591 (or 3933579 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 6691000869 is about 81798.5383060113. The cubic root of 6691000869 is about 1884.3592133229.

The spelling of 6691000869 in words is "six billion, six hundred ninety-one million, eight hundred sixty-nine", and thus it is an aban number.