68145658 has 32 divisors (see below), whose sum is σ = 119439360. Its totient is φ = 28558320.

The previous prime is 68145653. The next prime is 68145659. The reversal of 68145658 is 85654186.

It is not an unprimeable number, because it can be changed into a prime (68145653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177735 + ... + 178117.

It is an arithmetic number, because the mean of its divisors is an integer number (3732480).

Almost surely, 2^68145658 is an apocalyptic number.

68145658 is a deficient number, since it is larger than the sum of its proper divisors (51293702).

68145658 is a wasteful number, since it uses less digits than its factorization.

68145658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642.

The product of its digits is 230400, while the sum is 43.

The square root of 68145658 is about 8255.0383403107. The cubic root of 68145658 is about 408.4567365280.

The spelling of 68145658 in words is "sixty-eight million, one hundred forty-five thousand, six hundred fifty-eight".