13639068 has 36 divisors (see below), whose sum is σ = 34649160. Its totient is φ = 4523616.

The previous prime is 13639063. The next prime is 13639079. The reversal of 13639068 is 86093631.

It is a happy number.

13639068 is a `hidden beast` number, since 13 + 639 + 0 + 6 + 8 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13639063) 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 11 ways as a sum of consecutive naturals, for example, 7338 + ... + 9006.

Almost surely, 2^13639068 is an apocalyptic number.

13639068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13639068 is an abundant number, since it is smaller than the sum of its proper divisors (21010092).

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

13639068 is a wasteful number, since it uses less digits than its factorization.

13639068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906 (or 1901 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 13639068 is about 3693.1108837943. The cubic root of 13639068 is about 238.9249836052.

It can be divided in two parts, 136 and 39068, that added together give a square (39204 = 198²).

The spelling of 13639068 in words is "thirteen million, six hundred thirty-nine thousand, sixty-eight".