12867664 has 40 divisors (see below), whose sum is σ = 26025120. Its totient is φ = 6158208.

The previous prime is 12867661. The next prime is 12867667. The reversal of 12867664 is 46676821.

It is an interprime number because it is at equal distance from previous prime (12867661) and next prime (12867667).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 40434 + ... + 40750.

It is an arithmetic number, because the mean of its divisors is an integer number (650628).

Almost surely, 2^12867664 is an apocalyptic number.

It is an amenable number.

12867664 is an abundant number, since it is smaller than the sum of its proper divisors (13157456).

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

12867664 is a wasteful number, since it uses less digits than its factorization.

12867664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 421 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 12867664 is about 3587.1526312662. The cubic root of 12867664 is about 234.3328839050.

It can be divided in two parts, 12867 and 664, that added together give a palindrome (13531).

The spelling of 12867664 in words is "twelve million, eight hundred sixty-seven thousand, six hundred sixty-four".