12987593 has 2 divisors, whose sum is σ = 12987594. Its totient is φ = 12987592.

The previous prime is 12987587. The next prime is 12987599. The reversal of 12987593 is 39578921.

It is a balanced prime because it is at equal distance from previous prime (12987587) and next prime (12987599).

It can be written as a sum of positive squares in only one way, i.e., 8543929 + 4443664 = 2923^2 + 2108^2 .

It is a cyclic number.

It is not a de Polignac number, because 12987593 - 2⁴ = 12987577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12987599) 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 as a sum of consecutive naturals, namely, 6493796 + 6493797.

It is an arithmetic number, because the mean of its divisors is an integer number (6493797).

Almost surely, 2^12987593 is an apocalyptic number.

It is an amenable number.

12987593 is a deficient number, since it is larger than the sum of its proper divisors (1).

12987593 is an equidigital number, since it uses as much as digits as its factorization.

12987593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 12987593 is about 3603.8303234198. The cubic root of 12987593 is about 235.0586423743.

The spelling of 12987593 in words is "twelve million, nine hundred eighty-seven thousand, five hundred ninety-three".