12724885 has 4 divisors (see below), whose sum is σ = 15269868. Its totient is φ = 10179904.

The previous prime is 12724879. The next prime is 12724897. The reversal of 12724885 is 58842721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58842721 = 7 ⋅8406103.

It can be written as a sum of positive squares in 2 ways, for example, as 2852721 + 9872164 = 1689^2 + 3142^2 .

It is a cyclic number.

It is not a de Polignac number, because 12724885 - 2⁵ = 12724853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272484 + ... + 1272493.

It is an arithmetic number, because the mean of its divisors is an integer number (3817467).

Almost surely, 2^12724885 is an apocalyptic number.

It is an amenable number.

12724885 is a deficient number, since it is larger than the sum of its proper divisors (2544983).

12724885 is an equidigital number, since it uses as much as digits as its factorization.

12724885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544982.

The product of its digits is 35840, while the sum is 37.

The square root of 12724885 is about 3567.1956772793. The cubic root of 12724885 is about 233.4629427319.

The spelling of 12724885 in words is "twelve million, seven hundred twenty-four thousand, eight hundred eighty-five".