12867666 has 32 divisors (see below), whose sum is σ = 30363648. Its totient is φ = 3557520.

The previous prime is 12867661. The next prime is 12867667. The reversal of 12867666 is 66676821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (12867661) 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, 3640 + ... + 6243.

It is an arithmetic number, because the mean of its divisors is an integer number (948864).

Almost surely, 2^12867666 is an apocalyptic number.

12867666 is an abundant number, since it is smaller than the sum of its proper divisors (17495982).

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

12867666 is a wasteful number, since it uses less digits than its factorization.

12867666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9926.

The product of its digits is 145152, while the sum is 42.

The square root of 12867666 is about 3587.1529100388. The cubic root of 12867666 is about 234.3328960456.

The spelling of 12867666 in words is "twelve million, eight hundred sixty-seven thousand, six hundred sixty-six".