12698563 has 4 divisors (see below), whose sum is σ = 12877488. Its totient is φ = 12519640.

The previous prime is 12698551. The next prime is 12698573. The reversal of 12698563 is 36589621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36589621 = 233 ⋅157037.

It is a cyclic number.

It is not a de Polignac number, because 12698563 - 2⁹ = 12698051 is a prime.

It is a super-2 number, since 2×12698563² = 322507004529938, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12698503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89356 + ... + 89497.

It is an arithmetic number, because the mean of its divisors is an integer number (3219372).

Almost surely, 2^12698563 is an apocalyptic number.

12698563 is a deficient number, since it is larger than the sum of its proper divisors (178925).

12698563 is an equidigital number, since it uses as much as digits as its factorization.

12698563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178924.

The product of its digits is 77760, while the sum is 40.

The square root of 12698563 is about 3563.5043145758. The cubic root of 12698563 is about 233.3018553908.

It can be divided in two parts, 126 and 98563, that added together give a palindrome (98689).

The spelling of 12698563 in words is "twelve million, six hundred ninety-eight thousand, five hundred sixty-three".