12740885 has 4 divisors (see below), whose sum is σ = 15289068. Its totient is φ = 10192704.

The previous prime is 12740869. The next prime is 12740891. The reversal of 12740885 is 58804721.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9991921 + 2748964 = 3161^2 + 1658^2 .

It is a cyclic number.

It is not a de Polignac number, because 12740885 - 2⁴ = 12740869 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, 1274084 + ... + 1274093.

It is an arithmetic number, because the mean of its divisors is an integer number (3822267).

Almost surely, 2^12740885 is an apocalyptic number.

It is an amenable number.

12740885 is a deficient number, since it is larger than the sum of its proper divisors (2548183).

12740885 is an equidigital number, since it uses as much as digits as its factorization.

12740885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548182.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 12740885 is about 3569.4376307760. The cubic root of 12740885 is about 233.5607521966.

The spelling of 12740885 in words is "twelve million, seven hundred forty thousand, eight hundred eighty-five".