6600861841 has 4 divisors (see below), whose sum is σ = 7543842112. Its totient is φ = 5657881572.

The previous prime is 6600861829. The next prime is 6600861857. The reversal of 6600861841 is 1481680066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-6600861841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6600861794 and 6600861803.

It is not an unprimeable number, because it can be changed into a prime (6600861821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471490125 + ... + 471490138.

It is an arithmetic number, because the mean of its divisors is an integer number (1885960528).

Almost surely, 2^6600861841 is an apocalyptic number.

It is an amenable number.

6600861841 is a deficient number, since it is larger than the sum of its proper divisors (942980271).

6600861841 is an equidigital number, since it uses as much as digits as its factorization.

6600861841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942980270.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 6600861841 is about 81245.6881378944. The cubic root of 6600861841 is about 1875.8590993849.

The spelling of 6600861841 in words is "six billion, six hundred million, eight hundred sixty-one thousand, eight hundred forty-one".