12785797 has 4 divisors (see below), whose sum is σ = 12793036. Its totient is φ = 12778560.

The previous prime is 12785789. The next prime is 12785807. The reversal of 12785797 is 79758721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12013156 + 772641 = 3466^2 + 879^2 .

It is a cyclic number.

It is not a de Polignac number, because 12785797 - 2³ = 12785789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12785767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973 + ... + 5149.

It is an arithmetic number, because the mean of its divisors is an integer number (3198259).

Almost surely, 2^12785797 is an apocalyptic number.

It is an amenable number.

12785797 is a deficient number, since it is larger than the sum of its proper divisors (7239).

12785797 is an equidigital number, since it uses as much as digits as its factorization.

12785797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238.

The product of its digits is 246960, while the sum is 46.

The square root of 12785797 is about 3575.7232834771. The cubic root of 12785797 is about 233.8348665694.

The spelling of 12785797 in words is "twelve million, seven hundred eighty-five thousand, seven hundred ninety-seven".