12647773 has 4 divisors (see below), whose sum is σ = 12658428. Its totient is φ = 12637120.

The previous prime is 12647753. The next prime is 12647777. The reversal of 12647773 is 37774621.

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 1505529 + 11142244 = 1227^2 + 3338^2 .

It is a cyclic number.

It is not a de Polignac number, because 12647773 - 2¹⁷ = 12516701 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 (12647777) 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, 3286 + ... + 6007.

It is an arithmetic number, because the mean of its divisors is an integer number (3164607).

Almost surely, 2^12647773 is an apocalyptic number.

It is an amenable number.

12647773 is a deficient number, since it is larger than the sum of its proper divisors (10655).

12647773 is an equidigital number, since it uses as much as digits as its factorization.

12647773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10654.

The product of its digits is 49392, while the sum is 37.

The square root of 12647773 is about 3556.3707624487. The cubic root of 12647773 is about 232.9903966767.

The spelling of 12647773 in words is "twelve million, six hundred forty-seven thousand, seven hundred seventy-three".