67271689 has 2 divisors, whose sum is σ = 67271690. Its totient is φ = 67271688.

The previous prime is 67271671. The next prime is 67271717. The reversal of 67271689 is 98617276.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42471289 + 24800400 = 6517^2 + 4980^2 .

It is a cyclic number.

It is not a de Polignac number, because 67271689 - 2⁹ = 67271177 is a prime.

It is not a weakly prime, because it can be changed into another prime (67271489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33635844 + 33635845.

It is an arithmetic number, because the mean of its divisors is an integer number (33635845).

Almost surely, 2^67271689 is an apocalyptic number.

It is an amenable number.

67271689 is a deficient number, since it is larger than the sum of its proper divisors (1).

67271689 is an equidigital number, since it uses as much as digits as its factorization.

67271689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 67271689 is about 8201.9320284918. The cubic root of 67271689 is about 406.7030636449.

It can be divided in two parts, 672 and 71689, that added together give a square (72361 = 269²).

The spelling of 67271689 in words is "sixty-seven million, two hundred seventy-one thousand, six hundred eighty-nine".