12516987 has 8 divisors (see below), whose sum is σ = 19073536. Its totient is φ = 7152552.

The previous prime is 12516983. The next prime is 12517019. The reversal of 12516987 is 78961521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12516987 - 2² = 12516983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12516983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298003 + ... + 298044.

It is an arithmetic number, because the mean of its divisors is an integer number (2384192).

Almost surely, 2^12516987 is an apocalyptic number.

12516987 is a deficient number, since it is larger than the sum of its proper divisors (6556549).

12516987 is an equidigital number, since it uses as much as digits as its factorization.

12516987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596057.

The product of its digits is 30240, while the sum is 39.

The square root of 12516987 is about 3537.9354148995. The cubic root of 12516987 is about 232.1845229873.

The spelling of 12516987 in words is "twelve million, five hundred sixteen thousand, nine hundred eighty-seven".