12645547 has 2 divisors, whose sum is σ = 12645548. Its totient is φ = 12645546.

The previous prime is 12645533. The next prime is 12645623. The reversal of 12645547 is 74554621.

12645547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12645547 - 2⁷ = 12645419 is a prime.

It is not a weakly prime, because it can be changed into another prime (12645047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6322773 + 6322774.

It is an arithmetic number, because the mean of its divisors is an integer number (6322774).

Almost surely, 2^12645547 is an apocalyptic number.

12645547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12645547 is an equidigital number, since it uses as much as digits as its factorization.

12645547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 12645547 is about 3556.0577891817. The cubic root of 12645547 is about 232.9767271542.

The spelling of 12645547 in words is "twelve million, six hundred forty-five thousand, five hundred forty-seven".