6879790081 has 4 divisors (see below), whose sum is σ = 6879955972. Its totient is φ = 6879624192.

The previous prime is 6879790079. The next prime is 6879790091. The reversal of 6879790081 is 1800979786.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1800979786 = 2 ⋅900489893.

It can be written as a sum of positive squares in 2 ways, for example, as 5839405056 + 1040385025 = 76416^2 + 32255^2 .

It is a cyclic number.

It is not a de Polignac number, because 6879790081 - 2¹ = 6879790079 is a prime.

It is a super-2 number, since 2×6879790081² = 94663023117251973122, which contains 22 as substring.

It is the 82945-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6879790091) by changing a digit.

It is a nontrivial repunit in base 82944.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41041 + ... + 124273.

It is an arithmetic number, because the mean of its divisors is an integer number (1719988993).

It is a 41472-hyperperfect number.

Almost surely, 2^6879790081 is an apocalyptic number.

It is an amenable number.

6879790081 is a deficient number, since it is larger than the sum of its proper divisors (165891).

6879790081 is an equidigital number, since it uses as much as digits as its factorization.

6879790081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165890.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The square root of 6879790081 is about 82944.5000045211. The cubic root of 6879790081 is about 1901.9177387749.

The spelling of 6879790081 in words is "six billion, eight hundred seventy-nine million, seven hundred ninety thousand, eighty-one".