12715715 has 4 divisors (see below), whose sum is σ = 15258864. Its totient is φ = 10172568.

The previous prime is 12715691. The next prime is 12715721. The reversal of 12715715 is 51751721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51751721 = 7 ⋅7393103.

It is a cyclic number.

It is not a de Polignac number, because 12715715 - 2¹² = 12711619 is a prime.

It is a super-2 number, since 2×12715715² = 323378815922450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271567 + ... + 1271576.

It is an arithmetic number, because the mean of its divisors is an integer number (3814716).

Almost surely, 2^12715715 is an apocalyptic number.

12715715 is a deficient number, since it is larger than the sum of its proper divisors (2543149).

12715715 is an equidigital number, since it uses as much as digits as its factorization.

12715715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543148.

The product of its digits is 2450, while the sum is 29.

The square root of 12715715 is about 3565.9101222549. The cubic root of 12715715 is about 233.4068487175.

The spelling of 12715715 in words is "twelve million, seven hundred fifteen thousand, seven hundred fifteen".