6618579885 has 24 divisors (see below), whose sum is σ = 11633791104. Its totient is φ = 3480190560.

The previous prime is 6618579883. The next prime is 6618579931. The reversal of 6618579885 is 5889758166.

6618579885 is a `hidden beast` number, since 6 + 618 + 5 + 7 + 9 + 8 + 8 + 5 = 666.

It is not a de Polignac number, because 6618579885 - 2¹ = 6618579883 is a prime.

It is a super-2 number, since 2×6618579885² = 87611199388253226450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6618579881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1032577 + ... + 1038966.

It is an arithmetic number, because the mean of its divisors is an integer number (484741296).

Almost surely, 2^6618579885 is an apocalyptic number.

It is an amenable number.

6618579885 is a deficient number, since it is larger than the sum of its proper divisors (5015211219).

6618579885 is a wasteful number, since it uses less digits than its factorization.

6618579885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071625 (or 2071622 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 63.

The square root of 6618579885 is about 81354.6549682315. The cubic root of 6618579885 is about 1877.5359945771.

It can be divided in two parts, 66185 and 79885, that added together give a triangular number (146070 = T₅₄₀).

The spelling of 6618579885 in words is "six billion, six hundred eighteen million, five hundred seventy-nine thousand, eight hundred eighty-five".