12654641 has 2 divisors, whose sum is σ = 12654642. Its totient is φ = 12654640.

The previous prime is 12654619. The next prime is 12654659. The reversal of 12654641 is 14645621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12567025 + 87616 = 3545^2 + 296^2 .

It is an emirp because it is prime and its reverse (14645621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12654641 - 2¹⁰ = 12653617 is a prime.

It is not a weakly prime, because it can be changed into another prime (12654601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327320 + 6327321.

It is an arithmetic number, because the mean of its divisors is an integer number (6327321).

Almost surely, 2^12654641 is an apocalyptic number.

It is an amenable number.

12654641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12654641 is an equidigital number, since it uses as much as digits as its factorization.

12654641 is an evil number, because the sum of its binary digits is even.

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

The square root of 12654641 is about 3557.3362225126. The cubic root of 12654641 is about 233.0325618992.

The spelling of 12654641 in words is "twelve million, six hundred fifty-four thousand, six hundred forty-one".