12578565 has 8 divisors (see below), whose sum is σ = 20125728. Its totient is φ = 6708560.

The previous prime is 12578561. The next prime is 12578581. The reversal of 12578565 is 56587521.

12578565 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12578565 - 2² = 12578561 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419271 + ... + 419300.

It is an arithmetic number, because the mean of its divisors is an integer number (2515716).

Almost surely, 2^12578565 is an apocalyptic number.

12578565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12578565 is a deficient number, since it is larger than the sum of its proper divisors (7547163).

12578565 is an equidigital number, since it uses as much as digits as its factorization.

12578565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838579.

The product of its digits is 84000, while the sum is 39.

The square root of 12578565 is about 3546.6272710845. The cubic root of 12578565 is about 232.5646484577.

The spelling of 12578565 in words is "twelve million, five hundred seventy-eight thousand, five hundred sixty-five".