68185145 has 8 divisors (see below), whose sum is σ = 93511104. Its totient is φ = 46755504.

The previous prime is 68185141. The next prime is 68185207. The reversal of 68185145 is 54158186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68185145 - 2² = 68185141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68185099 and 68185108.

It is not an unprimeable number, because it can be changed into a prime (68185141) 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, 974039 + ... + 974108.

It is an arithmetic number, because the mean of its divisors is an integer number (11688888).

Almost surely, 2^68185145 is an apocalyptic number.

It is an amenable number.

68185145 is a deficient number, since it is larger than the sum of its proper divisors (25325959).

68185145 is a wasteful number, since it uses less digits than its factorization.

68185145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948159.

The product of its digits is 38400, while the sum is 38.

The square root of 68185145 is about 8257.4296848353. The cubic root of 68185145 is about 408.5356147103.

The spelling of 68185145 in words is "sixty-eight million, one hundred eighty-five thousand, one hundred forty-five".