12717387 has 6 divisors (see below), whose sum is σ = 18369572. Its totient is φ = 8478252.

The previous prime is 12717361. The next prime is 12717407. The reversal of 12717387 is 78371721.

It is a happy number.

12717387 is a `hidden beast` number, since 1 + 271 + 7 + 387 = 666.

It is not a de Polignac number, because 12717387 - 2⁶ = 12717323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12717317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 706513 + ... + 706530.

Almost surely, 2^12717387 is an apocalyptic number.

12717387 is a deficient number, since it is larger than the sum of its proper divisors (5652185).

12717387 is a wasteful number, since it uses less digits than its factorization.

12717387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413049 (or 1413046 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The square root of 12717387 is about 3566.1445568008. The cubic root of 12717387 is about 233.4170785563.

It can be divided in two parts, 127173 and 87, that added together give a triangular number (127260 = T₅₀₄).

The spelling of 12717387 in words is "twelve million, seven hundred seventeen thousand, three hundred eighty-seven".