68018534 has 16 divisors (see below), whose sum is σ = 104638128. Its totient is φ = 33149952.

The previous prime is 68018519. The next prime is 68018539. The reversal of 68018534 is 43581086.

It is a junction number, because it is equal to n+sod(n) for n = 68018494 and 68018503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68018539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10382 + ... + 15614.

It is an arithmetic number, because the mean of its divisors is an integer number (6539883).

Almost surely, 2^68018534 is an apocalyptic number.

68018534 is a deficient number, since it is larger than the sum of its proper divisors (36619594).

68018534 is a wasteful number, since it uses less digits than its factorization.

68018534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 68018534 is about 8247.3349634897. The cubic root of 68018534 is about 408.2025898602.

The spelling of 68018534 in words is "sixty-eight million, eighteen thousand, five hundred thirty-four".