67944313 has 2 divisors, whose sum is σ = 67944314. Its totient is φ = 67944312.

The previous prime is 67944271. The next prime is 67944337. The reversal of 67944313 is 31344976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67371264 + 573049 = 8208^2 + 757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67944313 is a prime.

It is not a weakly prime, because it can be changed into another prime (67944353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33972156 + 33972157.

It is an arithmetic number, because the mean of its divisors is an integer number (33972157).

Almost surely, 2^67944313 is an apocalyptic number.

It is an amenable number.

67944313 is a deficient number, since it is larger than the sum of its proper divisors (1).

67944313 is an equidigital number, since it uses as much as digits as its factorization.

67944313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 67944313 is about 8242.8340393338. The cubic root of 67944313 is about 408.0540605830.

The spelling of 67944313 in words is "sixty-seven million, nine hundred forty-four thousand, three hundred thirteen".