660811107 has 8 divisors (see below), whose sum is σ = 961179840. Its totient is φ = 400491560.

The previous prime is 660811103. The next prime is 660811163. The reversal of 660811107 is 701118066.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 660811107 - 2² = 660811103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660811103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10012257 + ... + 10012322.

It is an arithmetic number, because the mean of its divisors is an integer number (120147480).

Almost surely, 2^660811107 is an apocalyptic number.

660811107 is a deficient number, since it is larger than the sum of its proper divisors (300368733).

660811107 is a wasteful number, since it uses less digits than its factorization.

660811107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20024593.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 660811107 is about 25706.2464587890. The cubic root of 660811107 is about 871.0152884738.

The spelling of 660811107 in words is "six hundred sixty million, eight hundred eleven thousand, one hundred seven".