12774137 has 4 divisors (see below), whose sum is σ = 13446480. Its totient is φ = 12101796.

The previous prime is 12774133. The next prime is 12774161. The reversal of 12774137 is 73147721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73147721 = 2371 ⋅30851.

It is a cyclic number.

It is not a de Polignac number, because 12774137 - 2² = 12774133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12774133) 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, 336143 + ... + 336180.

It is an arithmetic number, because the mean of its divisors is an integer number (3361620).

Almost surely, 2^12774137 is an apocalyptic number.

It is an amenable number.

12774137 is a deficient number, since it is larger than the sum of its proper divisors (672343).

12774137 is an equidigital number, since it uses as much as digits as its factorization.

12774137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672342.

The product of its digits is 8232, while the sum is 32.

The square root of 12774137 is about 3574.0924722228. The cubic root of 12774137 is about 233.7637630948.

The spelling of 12774137 in words is "twelve million, seven hundred seventy-four thousand, one hundred thirty-seven".