12578887 has 2 divisors, whose sum is σ = 12578888. Its totient is φ = 12578886.

The previous prime is 12578879. The next prime is 12578897. The reversal of 12578887 is 78887521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12578887 - 2³ = 12578879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12578807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6289443 + 6289444.

It is an arithmetic number, because the mean of its divisors is an integer number (6289444).

Almost surely, 2^12578887 is an apocalyptic number.

12578887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12578887 is an equidigital number, since it uses as much as digits as its factorization.

12578887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 46.

The square root of 12578887 is about 3546.6726660350. The cubic root of 12578887 is about 232.5666329231.

The spelling of 12578887 in words is "twelve million, five hundred seventy-eight thousand, eight hundred eighty-seven".