13659642 has 48 divisors (see below), whose sum is σ = 30820608. Its totient is φ = 4368960.

The previous prime is 13659641. The next prime is 13659647. The reversal of 13659642 is 24695631.

It is a happy number.

13659642 is a `hidden beast` number, since 1 + 3 + 6 + 5 + 9 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 13659597 and 13659606.

It is not an unprimeable number, because it can be changed into a prime (13659641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61143 + ... + 61365.

It is an arithmetic number, because the mean of its divisors is an integer number (642096).

Almost surely, 2^13659642 is an apocalyptic number.

13659642 is an abundant number, since it is smaller than the sum of its proper divisors (17160966).

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

13659642 is a wasteful number, since it uses less digits than its factorization.

13659642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 352 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 13659642 is about 3695.8952907246. The cubic root of 13659642 is about 239.0450595761.

The spelling of 13659642 in words is "thirteen million, six hundred fifty-nine thousand, six hundred forty-two".