660605506066 has 32 divisors (see below), whose sum is σ = 1089798635520. Its totient is φ = 297829904400.

The previous prime is 660605506063. The next prime is 660605506081.

660605506066 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (660605506063) 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, 10919521 + ... + 10979851.

It is an arithmetic number, because the mean of its divisors is an integer number (34056207360).

Almost surely, 2^660605506066 is an apocalyptic number.

660605506066 is a deficient number, since it is larger than the sum of its proper divisors (429193129454).

660605506066 is a wasteful number, since it uses less digits than its factorization.

660605506066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64390.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 660605506066 in words is "six hundred sixty billion, six hundred five million, five hundred six thousand, sixty-six".