12523647 has 4 divisors (see below), whose sum is σ = 16698200. Its totient is φ = 8349096.

The previous prime is 12523639. The next prime is 12523663. The reversal of 12523647 is 74632521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12523647 - 2³ = 12523639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087272 + ... + 2087277.

It is an arithmetic number, because the mean of its divisors is an integer number (4174550).

Almost surely, 2^12523647 is an apocalyptic number.

12523647 is a deficient number, since it is larger than the sum of its proper divisors (4174553).

12523647 is an equidigital number, since it uses as much as digits as its factorization.

12523647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174552.

The product of its digits is 10080, while the sum is 30.

The square root of 12523647 is about 3538.8765166363. The cubic root of 12523647 is about 232.2256956951.

The spelling of 12523647 in words is "twelve million, five hundred twenty-three thousand, six hundred forty-seven".