660115665606 has 8 divisors (see below), whose sum is σ = 1320231331224. Its totient is φ = 220038555200.

The previous prime is 660115665577. The next prime is 660115665613. The reversal of 660115665606 is 606566511066.

It is a sphenic number, since it is the product of 3 distinct primes.

660115665606 is an admirable number.

It is a super-2 number, since 2×660115665606² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55009638795 + ... + 55009638806.

It is an arithmetic number, because the mean of its divisors is an integer number (165028916403).

Almost surely, 2^660115665606 is an apocalyptic number.

660115665606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660115665606 is a wasteful number, since it uses less digits than its factorization.

660115665606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110019277606.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 660115665606 in words is "six hundred sixty billion, one hundred fifteen million, six hundred sixty-five thousand, six hundred six".