6810887881 has 8 divisors (see below), whose sum is σ = 7900049600. Its totient is φ = 5750770608.

The previous prime is 6810887873. The next prime is 6810887899. The reversal of 6810887881 is 1887880186.

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

It is a cyclic number.

It is not a de Polignac number, because 6810887881 - 2³ = 6810887873 is a prime.

It is a super-2 number, since 2×6810887881² = 92776387455105340322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6810887981) 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, 7260606 + ... + 7261543.

It is an arithmetic number, because the mean of its divisors is an integer number (987506200).

Almost surely, 2^6810887881 is an apocalyptic number.

It is an amenable number.

6810887881 is a deficient number, since it is larger than the sum of its proper divisors (1089161719).

6810887881 is a wasteful number, since it uses less digits than its factorization.

6810887881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14522223.

The product of its (nonzero) digits is 1376256, while the sum is 55.

The square root of 6810887881 is about 82528.1035829614. The cubic root of 6810887881 is about 1895.5470865370.

The spelling of 6810887881 in words is "six billion, eight hundred ten million, eight hundred eighty-seven thousand, eight hundred eighty-one".