12745837 has 4 divisors (see below), whose sum is σ = 13726300. Its totient is φ = 11765376.

The previous prime is 12745813. The next prime is 12745853. The reversal of 12745837 is 73854721.

It is the 1458-th star number.

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 1110916 + 11634921 = 1054^2 + 3411^2 .

It is a cyclic number.

It is not a de Polignac number, because 12745837 - 2⁷ = 12745709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12745796 and 12745805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12745807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490212 + ... + 490237.

It is an arithmetic number, because the mean of its divisors is an integer number (3431575).

Almost surely, 2^12745837 is an apocalyptic number.

It is an amenable number.

12745837 is a deficient number, since it is larger than the sum of its proper divisors (980463).

12745837 is an equidigital number, since it uses as much as digits as its factorization.

12745837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980462.

The product of its digits is 47040, while the sum is 37.

The square root of 12745837 is about 3570.1312300810. The cubic root of 12745837 is about 233.5910076310.

The spelling of 12745837 in words is "twelve million, seven hundred forty-five thousand, eight hundred thirty-seven".