12465641 has 4 divisors (see below), whose sum is σ = 13198932. Its totient is φ = 11732352.

The previous prime is 12465623. The next prime is 12465671. The reversal of 12465641 is 14656421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3345241 + 9120400 = 1829^2 + 3020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12465641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12465671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366620 + ... + 366653.

It is an arithmetic number, because the mean of its divisors is an integer number (3299733).

Almost surely, 2^12465641 is an apocalyptic number.

It is an amenable number.

12465641 is a deficient number, since it is larger than the sum of its proper divisors (733291).

12465641 is an equidigital number, since it uses as much as digits as its factorization.

12465641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733290.

The product of its digits is 5760, while the sum is 29.

The square root of 12465641 is about 3530.6714658829. The cubic root of 12465641 is about 231.8666060852.

It can be divided in two parts, 1 and 2465641, that added together give a palindrome (2465642).

The spelling of 12465641 in words is "twelve million, four hundred sixty-five thousand, six hundred forty-one".