13641516 has 36 divisors (see below), whose sum is σ = 39409552. Its totient is φ = 3897504.

The previous prime is 13641499. The next prime is 13641517. The reversal of 13641516 is 61514631.

13641516 is a `hidden beast` number, since 1 + 3 + 641 + 5 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13641516.

It is not an unprimeable number, because it can be changed into a prime (13641517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26815 + ... + 27318.

Almost surely, 2^13641516 is an apocalyptic number.

It is an amenable number.

13641516 is an abundant number, since it is smaller than the sum of its proper divisors (25768036).

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

13641516 is a wasteful number, since it uses less digits than its factorization.

13641516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54150 (or 54145 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 13641516 is about 3693.4422968283. The cubic root of 13641516 is about 238.9392771862.

The spelling of 13641516 in words is "thirteen million, six hundred forty-one thousand, five hundred sixteen".