12591611 has 8 divisors (see below), whose sum is σ = 13762944. Its totient is φ = 11468160.

The previous prime is 12591583. The next prime is 12591613. The reversal of 12591611 is 11619521.

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 12591611 - 2¹⁰ = 12590587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12591613) 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 7 ways as a sum of consecutive naturals, for example, 11420 + ... + 12473.

It is an arithmetic number, because the mean of its divisors is an integer number (1720368).

Almost surely, 2^12591611 is an apocalyptic number.

12591611 is a deficient number, since it is larger than the sum of its proper divisors (1171333).

12591611 is a wasteful number, since it uses less digits than its factorization.

12591611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23941.

The product of its digits is 540, while the sum is 26.

The square root of 12591611 is about 3548.4660066006. The cubic root of 12591611 is about 232.6450230230.

The spelling of 12591611 in words is "twelve million, five hundred ninety-one thousand, six hundred eleven".