67319393 has 2 divisors, whose sum is σ = 67319394. Its totient is φ = 67319392.

The previous prime is 67319377. The next prime is 67319401. The reversal of 67319393 is 39391376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52171729 + 15147664 = 7223^2 + 3892^2 .

It is a cyclic number.

It is not a de Polignac number, because 67319393 - 2⁴ = 67319377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67319393.

It is not a weakly prime, because it can be changed into another prime (67319363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33659696 + 33659697.

It is an arithmetic number, because the mean of its divisors is an integer number (33659697).

Almost surely, 2^67319393 is an apocalyptic number.

It is an amenable number.

67319393 is a deficient number, since it is larger than the sum of its proper divisors (1).

67319393 is an equidigital number, since it uses as much as digits as its factorization.

67319393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 41.

The square root of 67319393 is about 8204.8396084262. The cubic root of 67319393 is about 406.7991752933.

The spelling of 67319393 in words is "sixty-seven million, three hundred nineteen thousand, three hundred ninety-three".