68539158 has 12 divisors (see below), whose sum is σ = 148501548. Its totient is φ = 22846380.

The previous prime is 68539153. The next prime is 68539169. The reversal of 68539158 is 85193586.

68539158 is a `hidden beast` number, since 68 + 539 + 1 + 58 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68539153) 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, 1903848 + ... + 1903883.

It is an arithmetic number, because the mean of its divisors is an integer number (12375129).

Almost surely, 2^68539158 is an apocalyptic number.

68539158 is an abundant number, since it is smaller than the sum of its proper divisors (79962390).

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

68539158 is a wasteful number, since it uses less digits than its factorization.

68539158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3807739 (or 3807736 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 68539158 is about 8278.8379619364. The cubic root of 68539158 is about 409.2414250452.

The spelling of 68539158 in words is "sixty-eight million, five hundred thirty-nine thousand, one hundred fifty-eight".