12694887 has 10 divisors (see below), whose sum is σ = 18964088. Its totient is φ = 8463204.

The previous prime is 12694883. The next prime is 12694889. The reversal of 12694887 is 78849621.

It is not a de Polignac number, because 12694887 - 2² = 12694883 is a prime.

It is a super-2 number, since 2×12694887² = 322320311885538, 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 (12694883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 78283 + ... + 78444.

Almost surely, 2^12694887 is an apocalyptic number.

12694887 is a deficient number, since it is larger than the sum of its proper divisors (6269201).

12694887 is an equidigital number, since it uses as much as digits as its factorization.

12694887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156739 (or 156730 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 12694887 is about 3562.9884928245. The cubic root of 12694887 is about 233.2793410221.

The spelling of 12694887 in words is "twelve million, six hundred ninety-four thousand, eight hundred eighty-seven".