12667541 has 4 divisors (see below), whose sum is σ = 12751584. Its totient is φ = 12583500.

The previous prime is 12667537. The next prime is 12667553. The reversal of 12667541 is 14576621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12667541 - 2² = 12667537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12667498 and 12667507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12667531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41795 + ... + 42096.

It is an arithmetic number, because the mean of its divisors is an integer number (3187896).

Almost surely, 2^12667541 is an apocalyptic number.

It is an amenable number.

12667541 is a deficient number, since it is larger than the sum of its proper divisors (84043).

12667541 is an equidigital number, since it uses as much as digits as its factorization.

12667541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84042.

The product of its digits is 10080, while the sum is 32.

The square root of 12667541 is about 3559.1489151200. The cubic root of 12667541 is about 233.1117186069. Note that the first 3 decimals are identical.

Adding to 12667541 its product of digits (10080), we get a palindrome (12677621).

The spelling of 12667541 in words is "twelve million, six hundred sixty-seven thousand, five hundred forty-one".