67422281 has 2 divisors, whose sum is σ = 67422282. Its totient is φ = 67422280.

The previous prime is 67422227. The next prime is 67422283. The reversal of 67422281 is 18222476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34703881 + 32718400 = 5891^2 + 5720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67422281 is a prime.

It is a super-2 number, since 2×67422281² = 9091527950485922, which contains 22 as substring.

Together with 67422283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67422283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33711140 + 33711141.

It is an arithmetic number, because the mean of its divisors is an integer number (33711141).

Almost surely, 2^67422281 is an apocalyptic number.

It is an amenable number.

67422281 is a deficient number, since it is larger than the sum of its proper divisors (1).

67422281 is an equidigital number, since it uses as much as digits as its factorization.

67422281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 32.

The square root of 67422281 is about 8211.1071726047. The cubic root of 67422281 is about 407.0063144587.

The spelling of 67422281 in words is "sixty-seven million, four hundred twenty-two thousand, two hundred eighty-one".