12864895 has 8 divisors (see below), whose sum is σ = 15475680. Its totient is φ = 10266720.

The previous prime is 12864877. The next prime is 12864899. The reversal of 12864895 is 59846821.

It is a happy number.

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

It is not a de Polignac number, because 12864895 - 2¹¹ = 12862847 is a prime.

It is a super-2 number, since 2×12864895² = 331011046722050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12864899) 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, 736 + ... + 5125.

It is an arithmetic number, because the mean of its divisors is an integer number (1934460).

Almost surely, 2^12864895 is an apocalyptic number.

12864895 is a deficient number, since it is larger than the sum of its proper divisors (2610785).

12864895 is an equidigital number, since it uses as much as digits as its factorization.

12864895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305.

The product of its digits is 138240, while the sum is 43.

The square root of 12864895 is about 3586.7666497836. The cubic root of 12864895 is about 234.3160739566.

The spelling of 12864895 in words is "twelve million, eight hundred sixty-four thousand, eight hundred ninety-five".