12986567 has 10 divisors (see below), whose sum is σ = 14301240. Its totient is φ = 11792660.

The previous prime is 12986563. The next prime is 12986579. The reversal of 12986567 is 76568921.

It is not a de Polignac number, because 12986567 - 2² = 12986563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12986563) 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 9 ways as a sum of consecutive naturals, for example, 14198 + ... + 15084.

It is an arithmetic number, because the mean of its divisors is an integer number (1430124).

Almost surely, 2^12986567 is an apocalyptic number.

12986567 is a deficient number, since it is larger than the sum of its proper divisors (1314673).

12986567 is an frugal number, since it uses more digits than its factorization.

12986567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931 (or 898 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 12986567 is about 3603.6879720642. The cubic root of 12986567 is about 235.0524524534.

The spelling of 12986567 in words is "twelve million, nine hundred eighty-six thousand, five hundred sixty-seven".