12988617 has 4 divisors (see below), whose sum is σ = 17318160. Its totient is φ = 8659076.

The previous prime is 12988603. The next prime is 12988621. The reversal of 12988617 is 71688921.

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.

It is a cyclic number.

It is not a de Polignac number, because 12988617 - 2⁴ = 12988601 is a prime.

It is a super-3 number, since 3×12988617³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12988637) 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, 2164767 + ... + 2164772.

It is an arithmetic number, because the mean of its divisors is an integer number (4329540).

Almost surely, 2^12988617 is an apocalyptic number.

It is an amenable number.

12988617 is a deficient number, since it is larger than the sum of its proper divisors (4329543).

12988617 is an equidigital number, since it uses as much as digits as its factorization.

12988617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329542.

The product of its digits is 48384, while the sum is 42.

The square root of 12988617 is about 3603.9723916812. The cubic root of 12988617 is about 235.0648199039.

The spelling of 12988617 in words is "twelve million, nine hundred eighty-eight thousand, six hundred seventeen".