12645461 has 2 divisors, whose sum is σ = 12645462. Its totient is φ = 12645460.

The previous prime is 12645449. The next prime is 12645487. The reversal of 12645461 is 16454621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6345361 + 6300100 = 2519^2 + 2510^2 .

It is a cyclic number.

It is not a de Polignac number, because 12645461 - 2¹⁸ = 12383317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12645401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6322730 + 6322731.

It is an arithmetic number, because the mean of its divisors is an integer number (6322731).

Almost surely, 2^12645461 is an apocalyptic number.

It is an amenable number.

12645461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12645461 is an equidigital number, since it uses as much as digits as its factorization.

12645461 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12645461 is about 3556.0456971192. The cubic root of 12645461 is about 232.9761990092.

It can be divided in two parts, 1 and 2645461, that added together give a palindrome (2645462).

The spelling of 12645461 in words is "twelve million, six hundred forty-five thousand, four hundred sixty-one".