6600066 has 24 divisors (see below), whose sum is σ = 14510832. Its totient is φ = 1999800.

The previous prime is 6600053. The next prime is 6600067.

6600066 is nontrivially palindromic in base 10.

It is an Ulam number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6600067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3820 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (604618).

Almost surely, 2^6600066 is an apocalyptic number.

6600066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6600066 is an abundant number, since it is smaller than the sum of its proper divisors (7910766).

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

6600066 is a wasteful number, since it uses less digits than its factorization.

6600066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118 (or 9107 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 6600066 is about 2569.0593609335. The cubic root of 6600066 is about 187.5783707938.

It can be divided in two parts, 66000 and 66, that added together give a palindrome (66066).

The spelling of 6600066 in words is "six million, six hundred thousand, sixty-six".