12791745 has 12 divisors (see below), whose sum is σ = 22172436. Its totient is φ = 6822240.

The previous prime is 12791687. The next prime is 12791773. The reversal of 12791745 is 54719721.

It is a happy number.

12791745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4822416 + 7969329 = 2196^2 + 2823^2 .

It is not a de Polignac number, because 12791745 - 2⁸ = 12791489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142086 + ... + 142175.

It is an arithmetic number, because the mean of its divisors is an integer number (1847703).

Almost surely, 2^12791745 is an apocalyptic number.

12791745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12791745 is a deficient number, since it is larger than the sum of its proper divisors (9380691).

12791745 is a wasteful number, since it uses less digits than its factorization.

12791745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284272 (or 284269 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 12791745 is about 3576.5549066105. The cubic root of 12791745 is about 233.8711212294.

The spelling of 12791745 in words is "twelve million, seven hundred ninety-one thousand, seven hundred forty-five".