13698618 has 16 divisors (see below), whose sum is σ = 27504576. Its totient is φ = 4548320.

The previous prime is 13698611. The next prime is 13698649. The reversal of 13698618 is 81689631.

It is a self number, because there is not a number n which added to its sum of digits gives 13698618.

It is not an unprimeable number, because it can be changed into a prime (13698611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2763 + ... + 5918.

It is an arithmetic number, because the mean of its divisors is an integer number (1719036).

Almost surely, 2^13698618 is an apocalyptic number.

13698618 is an abundant number, since it is smaller than the sum of its proper divisors (13805958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13698618 is a wasteful number, since it uses less digits than its factorization.

13698618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8949.

The product of its digits is 62208, while the sum is 42.

The square root of 13698618 is about 3701.1644113711. The cubic root of 13698618 is about 239.2722049295.

The spelling of 13698618 in words is "thirteen million, six hundred ninety-eight thousand, six hundred eighteen".