12967561 has 8 divisors (see below), whose sum is σ = 13613760. Its totient is φ = 12328272.

The previous prime is 12967547. The next prime is 12967571. The reversal of 12967561 is 16576921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12967561 - 2⁵ = 12967529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12967561.

It is not an unprimeable number, because it can be changed into a prime (12967531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2350 + ... + 5608.

It is an arithmetic number, because the mean of its divisors is an integer number (1701720).

Almost surely, 2^12967561 is an apocalyptic number.

It is an amenable number.

12967561 is a deficient number, since it is larger than the sum of its proper divisors (646199).

12967561 is a wasteful number, since it uses less digits than its factorization.

12967561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455.

The product of its digits is 22680, while the sum is 37.

The square root of 12967561 is about 3601.0499857680. The cubic root of 12967561 is about 234.9377290870.

The spelling of 12967561 in words is "twelve million, nine hundred sixty-seven thousand, five hundred sixty-one".