68956189 has 2 divisors, whose sum is σ = 68956190. Its totient is φ = 68956188.

The previous prime is 68956163. The next prime is 68956193. The reversal of 68956189 is 98165986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68608089 + 348100 = 8283^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 68956189 - 2²⁵ = 35401757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68956109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34478094 + 34478095.

It is an arithmetic number, because the mean of its divisors is an integer number (34478095).

Almost surely, 2^68956189 is an apocalyptic number.

It is an amenable number.

68956189 is a deficient number, since it is larger than the sum of its proper divisors (1).

68956189 is an equidigital number, since it uses as much as digits as its factorization.

68956189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 52.

The square root of 68956189 is about 8303.9863318770. The cubic root of 68956189 is about 410.0697660378.

The spelling of 68956189 in words is "sixty-eight million, nine hundred fifty-six thousand, one hundred eighty-nine".