12378687 has 8 divisors (see below), whose sum is σ = 16524720. Its totient is φ = 8242560.

The previous prime is 12378673. The next prime is 12378689. The reversal of 12378687 is 78687321.

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

It is not a de Polignac number, because 12378687 - 2⁷ = 12378559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12378689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239 + ... + 5127.

It is an arithmetic number, because the mean of its divisors is an integer number (2065590).

Almost surely, 2^12378687 is an apocalyptic number.

12378687 is a deficient number, since it is larger than the sum of its proper divisors (4146033).

12378687 is a wasteful number, since it uses less digits than its factorization.

12378687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4953.

The product of its digits is 112896, while the sum is 42.

The square root of 12378687 is about 3518.3358282006. The cubic root of 12378687 is about 231.3262196282.

The spelling of 12378687 in words is "twelve million, three hundred seventy-eight thousand, six hundred eighty-seven".