13613768 has 24 divisors (see below), whose sum is σ = 29694150. Its totient is φ = 5834304.

The previous prime is 13613767. The next prime is 13613771. The reversal of 13613768 is 86731631.

It can be written as a sum of positive squares in only one way, i.e., 13557124 + 56644 = 3682^2 + 238^2 .

It is not an unprimeable number, because it can be changed into a prime (13613767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16973 + ... + 17756.

Almost surely, 2^13613768 is an apocalyptic number.

It is an amenable number.

13613768 is an abundant number, since it is smaller than the sum of its proper divisors (16080382).

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

13613768 is a wasteful number, since it uses less digits than its factorization.

13613768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34749 (or 34738 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 13613768 is about 3689.6839973093. The cubic root of 13613768 is about 238.7771596342. Note that the first 3 decimals are identical.

The spelling of 13613768 in words is "thirteen million, six hundred thirteen thousand, seven hundred sixty-eight".