68894389 has 2 divisors, whose sum is σ = 68894390. Its totient is φ = 68894388.

The previous prime is 68894383. The next prime is 68894417. The reversal of 68894389 is 98349886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65772100 + 3122289 = 8110^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 68894389 - 2³ = 68894381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68894381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34447194 + 34447195.

It is an arithmetic number, because the mean of its divisors is an integer number (34447195).

Almost surely, 2^68894389 is an apocalyptic number.

It is an amenable number.

68894389 is a deficient number, since it is larger than the sum of its proper divisors (1).

68894389 is an equidigital number, since it uses as much as digits as its factorization.

68894389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 55.

The square root of 68894389 is about 8300.2643933793. The cubic root of 68894389 is about 409.9472250136.

The spelling of 68894389 in words is "sixty-eight million, eight hundred ninety-four thousand, three hundred eighty-nine".