67628189 has 2 divisors, whose sum is σ = 67628190. Its totient is φ = 67628188.

The previous prime is 67628179. The next prime is 67628263. The reversal of 67628189 is 98182676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49420900 + 18207289 = 7030^2 + 4267^2 .

It is a cyclic number.

It is not a de Polignac number, because 67628189 - 2¹⁶ = 67562653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67628129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33814094 + 33814095.

It is an arithmetic number, because the mean of its divisors is an integer number (33814095).

Almost surely, 2^67628189 is an apocalyptic number.

It is an amenable number.

67628189 is a deficient number, since it is larger than the sum of its proper divisors (1).

67628189 is an equidigital number, since it uses as much as digits as its factorization.

67628189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 67628189 is about 8223.6359963218. The cubic root of 67628189 is about 407.4202265211.

The spelling of 67628189 in words is "sixty-seven million, six hundred twenty-eight thousand, one hundred eighty-nine".