6859564081 has 8 divisors (see below), whose sum is σ = 7032630528. Its totient is φ = 6686772000.

The previous prime is 6859564079. The next prime is 6859564147. The reversal of 6859564081 is 1804659586.

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

It is not a de Polignac number, because 6859564081 - 2¹ = 6859564079 is a prime.

It is a super-2 number, since 2×6859564081² = 94107238762690749122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6859564001) 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, 17485 + ... + 118426.

It is an arithmetic number, because the mean of its divisors is an integer number (879078816).

Almost surely, 2^6859564081 is an apocalyptic number.

It is an amenable number.

6859564081 is a deficient number, since it is larger than the sum of its proper divisors (173066447).

6859564081 is a wasteful number, since it uses less digits than its factorization.

6859564081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137183.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The square root of 6859564081 is about 82822.4853587478. The cubic root of 6859564081 is about 1900.0520836138.

The spelling of 6859564081 in words is "six billion, eight hundred fifty-nine million, five hundred sixty-four thousand, eighty-one".