13663498 has 12 divisors (see below), whose sum is σ = 21180690. Its totient is φ = 6610440.

The previous prime is 13663493. The next prime is 13663499. The reversal of 13663498 is 89436631.

It can be written as a sum of positive squares in only one way, i.e., 13155129 + 508369 = 3627^2 + 713^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13663498.

It is not an unprimeable number, because it can be changed into a prime (13663493) 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 5 ways as a sum of consecutive naturals, for example, 1633 + ... + 5476.

Almost surely, 2^13663498 is an apocalyptic number.

13663498 is a deficient number, since it is larger than the sum of its proper divisors (7517192).

13663498 is an equidigital number, since it uses as much as digits as its factorization.

13663498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7173 (or 7142 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 13663498 is about 3696.4169137152. The cubic root of 13663498 is about 239.0675509178.

It can be divided in two parts, 13663 and 498, that added together give a square (14161 = 119²).

The spelling of 13663498 in words is "thirteen million, six hundred sixty-three thousand, four hundred ninety-eight".