68185193 has 4 divisors (see below), whose sum is σ = 68253780. Its totient is φ = 68116608.

The previous prime is 68185141. The next prime is 68185207. The reversal of 68185193 is 39158186.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24730729 + 43454464 = 4973^2 + 6592^2 .

It is a cyclic number.

It is not a de Polignac number, because 68185193 - 2⁸ = 68184937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68185193.

It is not an unprimeable number, because it can be changed into a prime (68185123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32780 + ... + 34797.

It is an arithmetic number, because the mean of its divisors is an integer number (17063445).

Almost surely, 2^68185193 is an apocalyptic number.

It is an amenable number.

68185193 is a deficient number, since it is larger than the sum of its proper divisors (68587).

68185193 is a wasteful number, since it uses less digits than its factorization.

68185193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68586.

The product of its digits is 51840, while the sum is 41.

The square root of 68185193 is about 8257.4325913083. The cubic root of 68185193 is about 408.5357105753.

The spelling of 68185193 in words is "sixty-eight million, one hundred eighty-five thousand, one hundred ninety-three".