6615611085 has 16 divisors (see below), whose sum is σ = 10587711744. Its totient is φ = 3527414592.

The previous prime is 6615611071. The next prime is 6615611089. The reversal of 6615611085 is 5801165166.

It is not a de Polignac number, because 6615611085 - 2⁴ = 6615611069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6615611089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5244 + ... + 115146.

It is an arithmetic number, because the mean of its divisors is an integer number (661731984).

Almost surely, 2^6615611085 is an apocalyptic number.

It is an amenable number.

6615611085 is a deficient number, since it is larger than the sum of its proper divisors (3972100659).

6615611085 is a wasteful number, since it uses less digits than its factorization.

6615611085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113924.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 6615611085 is about 81336.4068852319. The cubic root of 6615611085 is about 1877.2552262660.

The spelling of 6615611085 in words is "six billion, six hundred fifteen million, six hundred eleven thousand, eighty-five".