12318645 has 16 divisors (see below), whose sum is σ = 20034432. Its totient is φ = 6461760.

The previous prime is 12318623. The next prime is 12318689. The reversal of 12318645 is 54681321.

It is not a de Polignac number, because 12318645 - 2¹³ = 12310453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5817 + ... + 7646.

It is an arithmetic number, because the mean of its divisors is an integer number (1252152).

Almost surely, 2^12318645 is an apocalyptic number.

12318645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12318645 is a deficient number, since it is larger than the sum of its proper divisors (7715787).

12318645 is a wasteful number, since it uses less digits than its factorization.

12318645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13532.

The product of its digits is 5760, while the sum is 30.

The square root of 12318645 is about 3509.7927289229. The cubic root of 12318645 is about 230.9516024618.

Adding to 12318645 its reverse (54681321), we get a palindrome (66999966).

The spelling of 12318645 in words is "twelve million, three hundred eighteen thousand, six hundred forty-five".