665048115 has 24 divisors (see below), whose sum is σ = 1189938048. Its totient is φ = 343249920.

The previous prime is 665048077. The next prime is 665048147. The reversal of 665048115 is 511840566.

665048115 is a `hidden beast` number, since 66 + 504 + 81 + 15 = 666.

It is not a de Polignac number, because 665048115 - 2¹² = 665044019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 665048115.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236974 + ... + 239763.

It is an arithmetic number, because the mean of its divisors is an integer number (49580752).

Almost surely, 2^665048115 is an apocalyptic number.

665048115 is a deficient number, since it is larger than the sum of its proper divisors (524889933).

665048115 is a wasteful number, since it uses less digits than its factorization.

665048115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476779 (or 476776 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 665048115 is about 25788.5268094166. The cubic root of 665048115 is about 872.8729242730.

The spelling of 665048115 in words is "six hundred sixty-five million, forty-eight thousand, one hundred fifteen".