12591659 has 2 divisors, whose sum is σ = 12591660. Its totient is φ = 12591658.

The previous prime is 12591643. The next prime is 12591671. The reversal of 12591659 is 95619521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12591659 - 2⁴ = 12591643 is a prime.

It is a super-3 number, since 3×12591659³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12591959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6295829 + 6295830.

It is an arithmetic number, because the mean of its divisors is an integer number (6295830).

Almost surely, 2^12591659 is an apocalyptic number.

12591659 is a deficient number, since it is larger than the sum of its proper divisors (1).

12591659 is an equidigital number, since it uses as much as digits as its factorization.

12591659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 38.

The square root of 12591659 is about 3548.4727700801. The cubic root of 12591659 is about 232.6453186417.

The spelling of 12591659 in words is "twelve million, five hundred ninety-one thousand, six hundred fifty-nine".