6879338781 has 24 divisors (see below), whose sum is σ = 10683368640. Its totient is φ = 3926123712.

The previous prime is 6879338777. The next prime is 6879338783. The reversal of 6879338781 is 1878339786.

It is not a de Polignac number, because 6879338781 - 2² = 6879338777 is a prime.

It is a super-2 number, since 2×6879338781² = 94650604127541131922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6879338783) 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, 90000 + ... + 147846.

It is an arithmetic number, because the mean of its divisors is an integer number (445140360).

Almost surely, 2^6879338781 is an apocalyptic number.

It is an amenable number.

6879338781 is a deficient number, since it is larger than the sum of its proper divisors (3804029859).

6879338781 is a wasteful number, since it uses less digits than its factorization.

6879338781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58673 (or 58666 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 60.

The square root of 6879338781 is about 82941.7794660809. The cubic root of 6879338781 is about 1901.8761505755.

The spelling of 6879338781 in words is "six billion, eight hundred seventy-nine million, three hundred thirty-eight thousand, seven hundred eighty-one".