67238393 has 2 divisors, whose sum is σ = 67238394. Its totient is φ = 67238392.

The previous prime is 67238389. The next prime is 67238399. The reversal of 67238393 is 39383276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34668544 + 32569849 = 5888^2 + 5707^2 .

It is a cyclic number.

It is not a de Polignac number, because 67238393 - 2² = 67238389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 67238393.

It is not a weakly prime, because it can be changed into another prime (67238399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33619196 + 33619197.

It is an arithmetic number, because the mean of its divisors is an integer number (33619197).

Almost surely, 2^67238393 is an apocalyptic number.

It is an amenable number.

67238393 is a deficient number, since it is larger than the sum of its proper divisors (1).

67238393 is an equidigital number, since it uses as much as digits as its factorization.

67238393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 41.

The square root of 67238393 is about 8199.9020116097. The cubic root of 67238393 is about 406.6359535914.

The spelling of 67238393 in words is "sixty-seven million, two hundred thirty-eight thousand, three hundred ninety-three".