12927745 has 4 divisors (see below), whose sum is σ = 15513300. Its totient is φ = 10342192.

The previous prime is 12927743. The next prime is 12927757. The reversal of 12927745 is 54772921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54772921 = 7 ⋅7824703.

It can be written as a sum of positive squares in 2 ways, for example, as 4112784 + 8814961 = 2028^2 + 2969^2 .

It is a cyclic number.

It is not a de Polignac number, because 12927745 - 2¹ = 12927743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12927743) 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, 1292770 + ... + 1292779.

It is an arithmetic number, because the mean of its divisors is an integer number (3878325).

Almost surely, 2^12927745 is an apocalyptic number.

It is an amenable number.

12927745 is a deficient number, since it is larger than the sum of its proper divisors (2585555).

12927745 is an equidigital number, since it uses as much as digits as its factorization.

12927745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585554.

The product of its digits is 35280, while the sum is 37.

The square root of 12927745 is about 3595.5173480321. The cubic root of 12927745 is about 234.6970292135.

The spelling of 12927745 in words is "twelve million, nine hundred twenty-seven thousand, seven hundred forty-five".