12698987 has 6 divisors (see below), whose sum is σ = 14772348. Its totient is φ = 10884804.

The previous prime is 12698981. The next prime is 12698993. The reversal of 12698987 is 78989621.

12698987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12698981) and next prime (12698993).

It is not a de Polignac number, because 12698987 - 2⁸ = 12698731 is a prime.

It is a super-2 number, since 2×12698987² = 322528541652338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12698981) 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, 129533 + ... + 129630.

It is an arithmetic number, because the mean of its divisors is an integer number (2462058).

Almost surely, 2^12698987 is an apocalyptic number.

12698987 is a deficient number, since it is larger than the sum of its proper divisors (2073361).

12698987 is an equidigital number, since it uses as much as digits as its factorization.

12698987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259177 (or 259170 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 12698987 is about 3563.5638060795. The cubic root of 12698987 is about 233.3044519808.

The spelling of 12698987 in words is "twelve million, six hundred ninety-eight thousand, nine hundred eighty-seven".