6809040591 has 16 divisors (see below), whose sum is σ = 9146304000. Its totient is φ = 4505613728.

The previous prime is 6809040571. The next prime is 6809040599. The reversal of 6809040591 is 1950409086.

It is a cyclic number.

It is not a de Polignac number, because 6809040591 - 2⁶ = 6809040527 is a prime.

It is a super-3 number, since 3×6809040591³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809040599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713590 + ... + 723068.

It is an arithmetic number, because the mean of its divisors is an integer number (571644000).

Almost surely, 2^6809040591 is an apocalyptic number.

6809040591 is a deficient number, since it is larger than the sum of its proper divisors (2337263409).

6809040591 is a wasteful number, since it uses less digits than its factorization.

6809040591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11238.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 6809040591 is about 82516.9109395159. The cubic root of 6809040591 is about 1895.3756971448.

The spelling of 6809040591 in words is "six billion, eight hundred nine million, forty thousand, five hundred ninety-one".