67768189 has 4 divisors (see below), whose sum is σ = 70714656. Its totient is φ = 64821724.

The previous prime is 67768187. The next prime is 67768213. The reversal of 67768189 is 98186776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67768189 - 2¹ = 67768187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67768187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1473199 + ... + 1473244.

It is an arithmetic number, because the mean of its divisors is an integer number (17678664).

Almost surely, 2^67768189 is an apocalyptic number.

It is an amenable number.

67768189 is a deficient number, since it is larger than the sum of its proper divisors (2946467).

67768189 is a wasteful number, since it uses less digits than its factorization.

67768189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946466.

The product of its digits is 1016064, while the sum is 52.

The square root of 67768189 is about 8232.1436454911. The cubic root of 67768189 is about 407.7011720768.

The spelling of 67768189 in words is "sixty-seven million, seven hundred sixty-eight thousand, one hundred eighty-nine".