12772187 has 4 divisors (see below), whose sum is σ = 12843720. Its totient is φ = 12700656.

The previous prime is 12772181. The next prime is 12772211. The reversal of 12772187 is 78127721.

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 12772187 - 2⁴ = 12772171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12772181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35498 + ... + 35855.

It is an arithmetic number, because the mean of its divisors is an integer number (3210930).

Almost surely, 2^12772187 is an apocalyptic number.

12772187 is a deficient number, since it is larger than the sum of its proper divisors (71533).

12772187 is an equidigital number, since it uses as much as digits as its factorization.

12772187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71532.

The product of its digits is 10976, while the sum is 35.

The square root of 12772187 is about 3573.8196652881. The cubic root of 12772187 is about 233.7518676393.

The spelling of 12772187 in words is "twelve million, seven hundred seventy-two thousand, one hundred eighty-seven".