68548189 has 2 divisors, whose sum is σ = 68548190. Its totient is φ = 68548188.

The previous prime is 68548171. The next prime is 68548213. The reversal of 68548189 is 98184586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66145689 + 2402500 = 8133^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 68548189 - 2⁷ = 68548061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68548589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34274094 + 34274095.

It is an arithmetic number, because the mean of its divisors is an integer number (34274095).

Almost surely, 2^68548189 is an apocalyptic number.

It is an amenable number.

68548189 is a deficient number, since it is larger than the sum of its proper divisors (1).

68548189 is an equidigital number, since it uses as much as digits as its factorization.

68548189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 49.

The square root of 68548189 is about 8279.3833707590. The cubic root of 68548189 is about 409.2593986975.

The spelling of 68548189 in words is "sixty-eight million, five hundred forty-eight thousand, one hundred eighty-nine".