12266660 has 36 divisors (see below), whose sum is σ = 29968092. Its totient is φ = 4205376.

The previous prime is 12266641. The next prime is 12266663. The reversal of 12266660 is 6666221.

12266660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8479744 + 3786916 = 2912^2 + 1946^2 .

It is not an unprimeable number, because it can be changed into a prime (12266663) 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, 5279 + ... + 7238.

It is an arithmetic number, because the mean of its divisors is an integer number (832447).

Almost surely, 2^12266660 is an apocalyptic number.

12266660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12266660 is an abundant number, since it is smaller than the sum of its proper divisors (17701432).

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

12266660 is a wasteful number, since it uses less digits than its factorization.

12266660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12540 (or 12531 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 12266660 is about 3502.3791913498. The cubic root of 12266660 is about 230.6262704865.

The spelling of 12266660 in words is "twelve million, two hundred sixty-six thousand, six hundred sixty".