12887207 has 4 divisors (see below), whose sum is σ = 13645296. Its totient is φ = 12129120.

The previous prime is 12887197. The next prime is 12887213. The reversal of 12887207 is 70278821.

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 12887207 - 2¹⁰ = 12886183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12887267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379019 + ... + 379052.

It is an arithmetic number, because the mean of its divisors is an integer number (3411324).

Almost surely, 2^12887207 is an apocalyptic number.

12887207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12887207 is a deficient number, since it is larger than the sum of its proper divisors (758089).

12887207 is an equidigital number, since it uses as much as digits as its factorization.

12887207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758088.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 12887207 is about 3589.8756245865. The cubic root of 12887207 is about 234.4514563480.

The spelling of 12887207 in words is "twelve million, eight hundred eighty-seven thousand, two hundred seven".