12691167 has 4 divisors (see below), whose sum is σ = 16921560. Its totient is φ = 8460776.

The previous prime is 12691109. The next prime is 12691169. The reversal of 12691167 is 76119621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12691167 - 2⁶ = 12691103 is a prime.

It is a super-2 number, since 2×12691167² = 322131439643778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691169) 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, 2115192 + ... + 2115197.

It is an arithmetic number, because the mean of its divisors is an integer number (4230390).

Almost surely, 2^12691167 is an apocalyptic number.

12691167 is a deficient number, since it is larger than the sum of its proper divisors (4230393).

12691167 is an equidigital number, since it uses as much as digits as its factorization.

12691167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4230392.

The product of its digits is 4536, while the sum is 33.

The square root of 12691167 is about 3562.4664208944. The cubic root of 12691167 is about 233.2565527419.

The spelling of 12691167 in words is "twelve million, six hundred ninety-one thousand, one hundred sixty-seven".