67651273 has 2 divisors, whose sum is σ = 67651274. Its totient is φ = 67651272.

The previous prime is 67651261. The next prime is 67651291. The reversal of 67651273 is 37215676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47293129 + 20358144 = 6877^2 + 4512^2 .

It is a cyclic number.

It is not a de Polignac number, because 67651273 - 2⁹ = 67650761 is a prime.

It is not a weakly prime, because it can be changed into another prime (67651673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33825636 + 33825637.

It is an arithmetic number, because the mean of its divisors is an integer number (33825637).

Almost surely, 2^67651273 is an apocalyptic number.

It is an amenable number.

67651273 is a deficient number, since it is larger than the sum of its proper divisors (1).

67651273 is an equidigital number, since it uses as much as digits as its factorization.

67651273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 37.

The square root of 67651273 is about 8225.0393920029. The cubic root of 67651273 is about 407.4665771074.

The spelling of 67651273 in words is "sixty-seven million, six hundred fifty-one thousand, two hundred seventy-three".