6613106861 has 4 divisors (see below), whose sum is σ = 6661377852. Its totient is φ = 6564835872.

The previous prime is 6613106833. The next prime is 6613106867. The reversal of 6613106861 is 1686013166.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5258425225 + 1354681636 = 72515^2 + 36806^2 .

It is a cyclic number.

It is not a de Polignac number, because 6613106861 - 2¹⁸ = 6612844717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6613106867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24135290 + ... + 24135563.

It is an arithmetic number, because the mean of its divisors is an integer number (1665344463).

Almost surely, 2^6613106861 is an apocalyptic number.

It is an amenable number.

6613106861 is a deficient number, since it is larger than the sum of its proper divisors (48270991).

6613106861 is a wasteful number, since it uses less digits than its factorization.

6613106861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48270990.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 6613106861 is about 81321.0111902207. The cubic root of 6613106861 is about 1877.0183289824.

The spelling of 6613106861 in words is "six billion, six hundred thirteen million, one hundred six thousand, eight hundred sixty-one".