12916563 has 16 divisors (see below), whose sum is σ = 18873216. Its totient is φ = 7792640.

The previous prime is 12916559. The next prime is 12916619. The reversal of 12916563 is 36561921.

It is a happy number.

12916563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12916563 - 2² = 12916559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12916063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7720 + ... + 9242.

It is an arithmetic number, because the mean of its divisors is an integer number (1179576).

Almost surely, 2^12916563 is an apocalyptic number.

12916563 is a deficient number, since it is larger than the sum of its proper divisors (5956653).

12916563 is a wasteful number, since it uses less digits than its factorization.

12916563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794.

The product of its digits is 9720, while the sum is 33.

The square root of 12916563 is about 3593.9620198327. The cubic root of 12916563 is about 234.6293417396.

The spelling of 12916563 in words is "twelve million, nine hundred sixteen thousand, five hundred sixty-three".