660065095 has 4 divisors (see below), whose sum is σ = 792078120. Its totient is φ = 528052072.

The previous prime is 660065071. The next prime is 660065099. The reversal of 660065095 is 590560066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660065095 - 2²¹ = 657967943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660065099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66006505 + ... + 66006514.

It is an arithmetic number, because the mean of its divisors is an integer number (198019530).

Almost surely, 2^660065095 is an apocalyptic number.

660065095 is a deficient number, since it is larger than the sum of its proper divisors (132013025).

660065095 is a wasteful number, since it uses less digits than its factorization.

660065095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132013024.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 660065095 is about 25691.7320358126. The cubic root of 660065095 is about 870.6873921827.

The spelling of 660065095 in words is "six hundred sixty million, sixty-five thousand, ninety-five".