6869809645 has 32 divisors (see below), whose sum is σ = 8562153600. Its totient is φ = 5288075520.

The previous prime is 6869809637. The next prime is 6869809663. The reversal of 6869809645 is 5469089686.

It is not a de Polignac number, because 6869809645 - 2³ = 6869809637 is a prime.

It is a super-3 number, since 3×6869809645³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4195767 + ... + 4197403.

It is an arithmetic number, because the mean of its divisors is an integer number (267567300).

Almost surely, 2^6869809645 is an apocalyptic number.

It is an amenable number.

6869809645 is a deficient number, since it is larger than the sum of its proper divisors (1692343955).

6869809645 is a wasteful number, since it uses less digits than its factorization.

6869809645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965.

The product of its (nonzero) digits is 22394880, while the sum is 61.

The square root of 6869809645 is about 82884.3148309739. The cubic root of 6869809645 is about 1900.9975966180.

The spelling of 6869809645 in words is "six billion, eight hundred sixty-nine million, eight hundred nine thousand, six hundred forty-five".