12907187 has 6 divisors (see below), whose sum is σ = 13189908. Its totient is φ = 12630404.

The previous prime is 12907183. The next prime is 12907217. The reversal of 12907187 is 78170921.

It is not a de Polignac number, because 12907187 - 2² = 12907183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12907183) 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 5 ways as a sum of consecutive naturals, for example, 713 + ... + 5130.

It is an arithmetic number, because the mean of its divisors is an integer number (2198318).

Almost surely, 2^12907187 is an apocalyptic number.

12907187 is a deficient number, since it is larger than the sum of its proper divisors (282721).

12907187 is an frugal number, since it uses more digits than its factorization.

12907187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5937 (or 5890 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 12907187 is about 3592.6573730318. The cubic root of 12907187 is about 234.5725563235.

The spelling of 12907187 in words is "twelve million, nine hundred seven thousand, one hundred eighty-seven".