12645535 has 32 divisors (see below), whose sum is σ = 18755712. Its totient is φ = 7987200.

The previous prime is 12645533. The next prime is 12645547. The reversal of 12645535 is 53554621.

It is not a de Polignac number, because 12645535 - 2¹ = 12645533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12645497 and 12645506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645533) 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 31 ways as a sum of consecutive naturals, for example, 31335 + ... + 31735.

It is an arithmetic number, because the mean of its divisors is an integer number (586116).

Almost surely, 2^12645535 is an apocalyptic number.

12645535 is a deficient number, since it is larger than the sum of its proper divisors (6110177).

12645535 is a wasteful number, since it uses less digits than its factorization.

12645535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483.

The product of its digits is 18000, while the sum is 31.

The square root of 12645535 is about 3556.0561019197. The cubic root of 12645535 is about 232.9766534597.

The spelling of 12645535 in words is "twelve million, six hundred forty-five thousand, five hundred thirty-five".