12986601 has 4 divisors (see below), whose sum is σ = 17315472. Its totient is φ = 8657732.

The previous prime is 12986599. The next prime is 12986609. The reversal of 12986601 is 10668921.

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: 10668921 = 3 ⋅3556307.

It is a cyclic number.

It is not a de Polignac number, because 12986601 - 2¹ = 12986599 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12986609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2164431 + ... + 2164436.

It is an arithmetic number, because the mean of its divisors is an integer number (4328868).

Almost surely, 2^12986601 is an apocalyptic number.

It is an amenable number.

12986601 is a deficient number, since it is larger than the sum of its proper divisors (4328871).

12986601 is an equidigital number, since it uses as much as digits as its factorization.

12986601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328870.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12986601 is about 3603.6926894506. The cubic root of 12986601 is about 235.0526575827.

The spelling of 12986601 in words is "twelve million, nine hundred eighty-six thousand, six hundred one".