12612666 has 64 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 3619200.

The previous prime is 12612571. The next prime is 12612679. The reversal of 12612666 is 66621621.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159615 + ... + 159693.

It is an arithmetic number, because the mean of its divisors is an integer number (453600).

Almost surely, 2^12612666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12612666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14515200).

12612666 is an abundant number, since it is smaller than the sum of its proper divisors (16417734).

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

12612666 is a wasteful number, since it uses less digits than its factorization.

12612666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195.

The product of its digits is 5184, while the sum is 30.

The square root of 12612666 is about 3551.4315423502. The cubic root of 12612666 is about 232.7746228877.

The spelling of 12612666 in words is "twelve million, six hundred twelve thousand, six hundred sixty-six".