12732605 has 4 divisors (see below), whose sum is σ = 15279132. Its totient is φ = 10186080.

The previous prime is 12732589. The next prime is 12732637. The reversal of 12732605 is 50623721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50623721 = 659 ⋅76819.

It can be written as a sum of positive squares in 2 ways, for example, as 5257849 + 7474756 = 2293^2 + 2734^2 .

It is not a de Polignac number, because 12732605 - 2⁴ = 12732589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1273256 + ... + 1273265.

It is an arithmetic number, because the mean of its divisors is an integer number (3819783).

Almost surely, 2^12732605 is an apocalyptic number.

It is an amenable number.

12732605 is a deficient number, since it is larger than the sum of its proper divisors (2546527).

12732605 is an equidigital number, since it uses as much as digits as its factorization.

12732605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546526.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 12732605 is about 3568.2775957036. The cubic root of 12732605 is about 233.5101460284.

The spelling of 12732605 in words is "twelve million, seven hundred thirty-two thousand, six hundred five".