68707189 has 2 divisors, whose sum is σ = 68707190. Its totient is φ = 68707188.

The previous prime is 68707159. The next prime is 68707193. The reversal of 68707189 is 98170786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67519089 + 1188100 = 8217^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 68707189 - 2⁵ = 68707157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68707159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34353594 + 34353595.

It is an arithmetic number, because the mean of its divisors is an integer number (34353595).

Almost surely, 2^68707189 is an apocalyptic number.

It is an amenable number.

68707189 is a deficient number, since it is larger than the sum of its proper divisors (1).

68707189 is an equidigital number, since it uses as much as digits as its factorization.

68707189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 68707189 is about 8288.9799734346. The cubic root of 68707189 is about 409.5755850067.

The spelling of 68707189 in words is "sixty-eight million, seven hundred seven thousand, one hundred eighty-nine".