67273993 has 2 divisors, whose sum is σ = 67273994. Its totient is φ = 67273992.

The previous prime is 67273957. The next prime is 67274089. The reversal of 67273993 is 39937276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56430144 + 10843849 = 7512^2 + 3293^2 .

It is a cyclic number.

It is not a de Polignac number, because 67273993 - 2¹³ = 67265801 is a prime.

It is equal to p_3966949 and since 67273993 and 3966949 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (67270993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33636996 + 33636997.

It is an arithmetic number, because the mean of its divisors is an integer number (33636997).

Almost surely, 2^67273993 is an apocalyptic number.

It is an amenable number.

67273993 is a deficient number, since it is larger than the sum of its proper divisors (1).

67273993 is an equidigital number, since it uses as much as digits as its factorization.

67273993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 46.

The square root of 67273993 is about 8202.0724820011. The cubic root of 67273993 is about 406.7077066737.

The spelling of 67273993 in words is "sixty-seven million, two hundred seventy-three thousand, nine hundred ninety-three".