67318271 has 2 divisors, whose sum is σ = 67318272. Its totient is φ = 67318270.

The previous prime is 67318247. The next prime is 67318313. The reversal of 67318271 is 17281376.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67318271 is a prime.

It is a super-2 number, since 2×67318271² = 9063499220858882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67378271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33659135 + 33659136.

It is an arithmetic number, because the mean of its divisors is an integer number (33659136).

Almost surely, 2^67318271 is an apocalyptic number.

67318271 is a deficient number, since it is larger than the sum of its proper divisors (1).

67318271 is an equidigital number, since it uses as much as digits as its factorization.

67318271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

The square root of 67318271 is about 8204.7712338614. The cubic root of 67318271 is about 406.7969152650.

The spelling of 67318271 in words is "sixty-seven million, three hundred eighteen thousand, two hundred seventy-one".