12707287 has 4 divisors (see below), whose sum is σ = 12897016. Its totient is φ = 12517560.

The previous prime is 12707281. The next prime is 12707297. The reversal of 12707287 is 78270721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78270721 = 1723 ⋅45427.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12707287 is a prime.

It is a super-2 number, since 2×12707287² = 322950285800738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12707281) 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, 94764 + ... + 94897.

It is an arithmetic number, because the mean of its divisors is an integer number (3224254).

Almost surely, 2^12707287 is an apocalyptic number.

12707287 is a deficient number, since it is larger than the sum of its proper divisors (189729).

12707287 is an equidigital number, since it uses as much as digits as its factorization.

12707287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189728.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 12707287 is about 3564.7281803807. The cubic root of 12707287 is about 233.3552698197.

The spelling of 12707287 in words is "twelve million, seven hundred seven thousand, two hundred eighty-seven".