12966517 has 4 divisors (see below), whose sum is σ = 13149216.
Its totient is φ = 12783820.
The previous prime is 12966497. The next prime is 12966557. The reversal of 12966517 is 71566921.
12966517 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
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 a de Polignac number, because none of the positive numbers 2k-12966517 is a prime.
It is a super-2 number, since 2×129665172 = 336261126222578, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12966557) 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, 91243 + ... + 91384.
It is an arithmetic number, because the mean of its divisors is an integer number (3287304).
Almost surely, 212966517 is an apocalyptic number.
It is an amenable number.
12966517 is a deficient number, since it is larger than the sum of its proper divisors (182699).
12966517 is an equidigital number, since it uses as much as digits as its factorization.
12966517 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 182698.
The product of its digits is 22680, while the sum is 37.
The square root of 12966517 is about 3600.9050251291.
The cubic root of 12966517 is about 234.9314240830.
The spelling of 12966517 in words is "twelve million, nine hundred sixty-six thousand, five hundred seventeen".