660534435066 has 32 divisors (see below), whose sum is σ = 1441434045888. Its totient is φ = 200124727040.

The previous prime is 660534435061. The next prime is 660534435133.

660534435066 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (660534435061) 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, 571941 + ... + 1283816.

It is an arithmetic number, because the mean of its divisors is an integer number (45044813934).

Almost surely, 2^660534435066 is an apocalyptic number.

660534435066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

660534435066 is an abundant number, since it is smaller than the sum of its proper divisors (780899610822).

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

660534435066 is a wasteful number, since it uses less digits than its factorization.

660534435066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861166.

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 660534435066 in words is "six hundred sixty billion, five hundred thirty-four million, four hundred thirty-five thousand, sixty-six".