68180197 has 2 divisors, whose sum is σ = 68180198. Its totient is φ = 68180196.

The previous prime is 68180179. The next prime is 68180209. The reversal of 68180197 is 79108186.

Together with previous prime (68180179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44502241 + 23677956 = 6671^2 + 4866^2 .

It is a cyclic number.

It is not a de Polignac number, because 68180197 - 2¹⁹ = 67655909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68180107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34090098 + 34090099.

It is an arithmetic number, because the mean of its divisors is an integer number (34090099).

Almost surely, 2^68180197 is an apocalyptic number.

It is an amenable number.

68180197 is a deficient number, since it is larger than the sum of its proper divisors (1).

68180197 is an equidigital number, since it uses as much as digits as its factorization.

68180197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 68180197 is about 8257.1300704300. The cubic root of 68180197 is about 408.5257323861.

The spelling of 68180197 in words is "sixty-eight million, one hundred eighty thousand, one hundred ninety-seven".