68018532 has 12 divisors (see below), whose sum is σ = 158709936. Its totient is φ = 22672840.

The previous prime is 68018519. The next prime is 68018539. The reversal of 68018532 is 23581086.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 68018493 and 68018502.

It is not an unprimeable number, because it can be changed into a prime (68018539) 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 3 ways as a sum of consecutive naturals, for example, 2834094 + ... + 2834117.

It is an arithmetic number, because the mean of its divisors is an integer number (13225828).

Almost surely, 2^68018532 is an apocalyptic number.

It is an amenable number.

68018532 is an abundant number, since it is smaller than the sum of its proper divisors (90691404).

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

68018532 is a wasteful number, since it uses less digits than its factorization.

68018532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668218 (or 5668216 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 68018532 is about 8247.3348422384. The cubic root of 68018532 is about 408.2025858593.

The spelling of 68018532 in words is "sixty-eight million, eighteen thousand, five hundred thirty-two".