13660563 has 48 divisors (see below), whose sum is σ = 22945920. Its totient is φ = 7185024.

The previous prime is 13660561. The next prime is 13660573. The reversal of 13660563 is 36506631.

It is not a de Polignac number, because 13660563 - 2¹ = 13660561 is a prime.

It is a super-2 number, since 2×13660563² = 373221962953938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13660563.

It is not an unprimeable number, because it can be changed into a prime (13660561) 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 47 ways as a sum of consecutive naturals, for example, 187095 + ... + 187167.

It is an arithmetic number, because the mean of its divisors is an integer number (478040).

Almost surely, 2^13660563 is an apocalyptic number.

13660563 is a deficient number, since it is larger than the sum of its proper divisors (9285357).

13660563 is a wasteful number, since it uses less digits than its factorization.

13660563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 13660563 is about 3696.0198863101. The cubic root of 13660563 is about 239.0504319851.

The spelling of 13660563 in words is "thirteen million, six hundred sixty thousand, five hundred sixty-three".