12898564 has 18 divisors (see below), whose sum is σ = 26258190. Its totient is φ = 5527872.

The previous prime is 12898553. The next prime is 12898619. The reversal of 12898564 is 46589821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12744900 + 153664 = 3570^2 + 392^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12898564.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32709 + ... + 33100.

Almost surely, 2^12898564 is an apocalyptic number.

12898564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12898564 is an abundant number, since it is smaller than the sum of its proper divisors (13359626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12898564 is a wasteful number, since it uses less digits than its factorization.

12898564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65827 (or 65818 counting only the distinct ones).

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

The square root of 12898564 is about 3591.4570859193. The cubic root of 12898564 is about 234.5203071446.

The spelling of 12898564 in words is "twelve million, eight hundred ninety-eight thousand, five hundred sixty-four".