68240185 has 8 divisors (see below), whose sum is σ = 88187400. Its totient is φ = 50392704.

The previous prime is 68240177. The next prime is 68240233. The reversal of 68240185 is 58104286.

It can be written as a sum of positive squares in 4 ways, for example, as 210681 + 68029504 = 459^2 + 8248^2 .

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 68240185 - 2³ = 68240177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68240185.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524860 + ... + 524989.

It is an arithmetic number, because the mean of its divisors is an integer number (11023425).

Almost surely, 2^68240185 is an apocalyptic number.

68240185 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68240185 is a deficient number, since it is larger than the sum of its proper divisors (19947215).

68240185 is a wasteful number, since it uses less digits than its factorization.

68240185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049867.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 68240185 is about 8260.7617687475. The cubic root of 68240185 is about 408.6455103611.

The spelling of 68240185 in words is "sixty-eight million, two hundred forty thousand, one hundred eighty-five".