12770187 has 4 divisors (see below), whose sum is σ = 17026920. Its totient is φ = 8513456.

The previous prime is 12770141. The next prime is 12770189. The reversal of 12770187 is 78107721.

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 12770187 - 2⁷ = 12770059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12770189) 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, 2128362 + ... + 2128367.

It is an arithmetic number, because the mean of its divisors is an integer number (4256730).

Almost surely, 2^12770187 is an apocalyptic number.

12770187 is a deficient number, since it is larger than the sum of its proper divisors (4256733).

12770187 is an equidigital number, since it uses as much as digits as its factorization.

12770187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256732.

The product of its (nonzero) digits is 5488, while the sum is 33.

The square root of 12770187 is about 3573.5398416696. The cubic root of 12770187 is about 233.7396659143.

The spelling of 12770187 in words is "twelve million, seven hundred seventy thousand, one hundred eighty-seven".