12378653 has 4 divisors (see below), whose sum is σ = 14147040. Its totient is φ = 10610268.

The previous prime is 12378649. The next prime is 12378673. The reversal of 12378653 is 35687321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12378653 - 2² = 12378649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12378673) 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 3 ways as a sum of consecutive naturals, for example, 884183 + ... + 884196.

It is an arithmetic number, because the mean of its divisors is an integer number (3536760).

Almost surely, 2^12378653 is an apocalyptic number.

It is an amenable number.

12378653 is a deficient number, since it is larger than the sum of its proper divisors (1768387).

12378653 is an equidigital number, since it uses as much as digits as its factorization.

12378653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768386.

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

The square root of 12378653 is about 3518.3309963675. The cubic root of 12378653 is about 231.3260078368.

It can be divided in two parts, 12378 and 653, that added together give a palindrome (13031).

The spelling of 12378653 in words is "twelve million, three hundred seventy-eight thousand, six hundred fifty-three".