13400563 has 16 divisors (see below), whose sum is σ = 15345792. Its totient is φ = 11592000.

The previous prime is 13400561. The next prime is 13400591. The reversal of 13400563 is 36500431.

It is a cyclic number.

It is not a de Polignac number, because 13400563 - 2¹ = 13400561 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (13400561) 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, 19048 + ... + 19738.

It is an arithmetic number, because the mean of its divisors is an integer number (959112).

Almost surely, 2^13400563 is an apocalyptic number.

13400563 is a deficient number, since it is larger than the sum of its proper divisors (1945229).

13400563 is a wasteful number, since it uses less digits than its factorization.

13400563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 13400563 is about 3660.6779426767. The cubic root of 13400563 is about 237.5241002321.

Adding to 13400563 its reverse (36500431), we get a palindrome (49900994).

The spelling of 13400563 in words is "thirteen million, four hundred thousand, five hundred sixty-three".