660969066 has 32 divisors (see below), whose sum is σ = 1337083200. Its totient is φ = 217813376.

The previous prime is 660969059. The next prime is 660969097.

660969066 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201310 + ... + 204566.

It is an arithmetic number, because the mean of its divisors is an integer number (41783850).

Almost surely, 2^660969066 is an apocalyptic number.

660969066 is an abundant number, since it is smaller than the sum of its proper divisors (676114134).

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

660969066 is a wasteful number, since it uses less digits than its factorization.

660969066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638.

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 660969066 is about 25709.3186607502. The cubic root of 660969066 is about 871.0846848774.

The spelling of 660969066 in words is "six hundred sixty million, nine hundred sixty-nine thousand, sixty-six".