67918229 has 2 divisors, whose sum is σ = 67918230. Its totient is φ = 67918228.

The previous prime is 67918211. The next prime is 67918267. The reversal of 67918229 is 92281976.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66422500 + 1495729 = 8150^2 + 1223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67918229 is a prime.

It is a super-2 number, since 2×67918229² = 9225771660992882, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67918229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67918429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33959114 + 33959115.

It is an arithmetic number, because the mean of its divisors is an integer number (33959115).

Almost surely, 2^67918229 is an apocalyptic number.

It is an amenable number.

67918229 is a deficient number, since it is larger than the sum of its proper divisors (1).

67918229 is an equidigital number, since it uses as much as digits as its factorization.

67918229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 67918229 is about 8241.2516646442. The cubic root of 67918229 is about 408.0018362246.

The spelling of 67918229 in words is "sixty-seven million, nine hundred eighteen thousand, two hundred twenty-nine".