12645447 has 8 divisors (see below), whose sum is σ = 16915056. Its totient is φ = 8403072.

The previous prime is 12645439. The next prime is 12645449. The reversal of 12645447 is 74454621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12645447 - 2³ = 12645439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645449) 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 in 7 ways as a sum of consecutive naturals, for example, 5698 + ... + 7599.

It is an arithmetic number, because the mean of its divisors is an integer number (2114382).

Almost surely, 2^12645447 is an apocalyptic number.

12645447 is a deficient number, since it is larger than the sum of its proper divisors (4269609).

12645447 is a wasteful number, since it uses less digits than its factorization.

12645447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13617.

The product of its digits is 26880, while the sum is 33.

The square root of 12645447 is about 3556.0437286400. The cubic root of 12645447 is about 232.9761130319.

The spelling of 12645447 in words is "twelve million, six hundred forty-five thousand, four hundred forty-seven".