12864562 has 4 divisors (see below), whose sum is σ = 19296846. Its totient is φ = 6432280.

The previous prime is 12864559. The next prime is 12864569. The reversal of 12864562 is 26546821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10764961 + 2099601 = 3281^2 + 1449^2 .

It is not an unprimeable number, because it can be changed into a prime (12864569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216139 + ... + 3216142.

Almost surely, 2^12864562 is an apocalyptic number.

12864562 is a deficient number, since it is larger than the sum of its proper divisors (6432284).

12864562 is an equidigital number, since it uses as much as digits as its factorization.

12864562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432283.

The product of its digits is 23040, while the sum is 34.

The square root of 12864562 is about 3586.7202288442. The cubic root of 12864562 is about 234.3140522293.

The spelling of 12864562 in words is "twelve million, eight hundred sixty-four thousand, five hundred sixty-two".