68650189 has 2 divisors, whose sum is σ = 68650190. Its totient is φ = 68650188.

The previous prime is 68650181. The next prime is 68650229. The reversal of 68650189 is 98105686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68194564 + 455625 = 8258^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 68650189 - 2³ = 68650181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68650181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34325094 + 34325095.

It is an arithmetic number, because the mean of its divisors is an integer number (34325095).

Almost surely, 2^68650189 is an apocalyptic number.

It is an amenable number.

68650189 is a deficient number, since it is larger than the sum of its proper divisors (1).

68650189 is an equidigital number, since it uses as much as digits as its factorization.

68650189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 68650189 is about 8285.5409600098. The cubic root of 68650189 is about 409.4622913441.

The spelling of 68650189 in words is "sixty-eight million, six hundred fifty thousand, one hundred eighty-nine".