12628617 has 4 divisors (see below), whose sum is σ = 16838160. Its totient is φ = 8419076.

The previous prime is 12628613. The next prime is 12628657. The reversal of 12628617 is 71682621.

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: 71682621 = 3 ⋅23894207.

It is a cyclic number.

It is not a de Polignac number, because 12628617 - 2² = 12628613 is a prime.

It is a super-3 number, since 3×12628617³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12628613) 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, 2104767 + ... + 2104772.

It is an arithmetic number, because the mean of its divisors is an integer number (4209540).

Almost surely, 2^12628617 is an apocalyptic number.

It is an amenable number.

12628617 is a deficient number, since it is larger than the sum of its proper divisors (4209543).

12628617 is an equidigital number, since it uses as much as digits as its factorization.

12628617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209542.

The product of its digits is 8064, while the sum is 33.

The square root of 12628617 is about 3553.6765469018. The cubic root of 12628617 is about 232.8727101031.

The spelling of 12628617 in words is "twelve million, six hundred twenty-eight thousand, six hundred seventeen".