12635387 has 8 divisors (see below), whose sum is σ = 13154400. Its totient is φ = 12121984.

The previous prime is 12635377. The next prime is 12635407. The reversal of 12635387 is 78353621.

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

It is a cyclic number.

It is not a de Polignac number, because 12635387 - 2¹⁸ = 12373243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12635377) 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 7 ways as a sum of consecutive naturals, for example, 3539 + ... + 6147.

It is an arithmetic number, because the mean of its divisors is an integer number (1644300).

Almost surely, 2^12635387 is an apocalyptic number.

12635387 is a deficient number, since it is larger than the sum of its proper divisors (519013).

12635387 is a wasteful number, since it uses less digits than its factorization.

12635387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805.

The product of its digits is 30240, while the sum is 35.

The square root of 12635387 is about 3554.6289539135. The cubic root of 12635387 is about 232.9143157836.

The spelling of 12635387 in words is "twelve million, six hundred thirty-five thousand, three hundred eighty-seven".