67131269 has 2 divisors, whose sum is σ = 67131270. Its totient is φ = 67131268.

The previous prime is 67131263. The next prime is 67131329. The reversal of 67131269 is 96213176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33930625 + 33200644 = 5825^2 + 5762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67131269 is a prime.

It is a super-2 number, since 2×67131269² = 9013214555100722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67131263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33565634 + 33565635.

It is an arithmetic number, because the mean of its divisors is an integer number (33565635).

Almost surely, 2^67131269 is an apocalyptic number.

It is an amenable number.

67131269 is a deficient number, since it is larger than the sum of its proper divisors (1).

67131269 is an equidigital number, since it uses as much as digits as its factorization.

67131269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 67131269 is about 8193.3673785569. The cubic root of 67131269 is about 406.4198884243.

The spelling of 67131269 in words is "sixty-seven million, one hundred thirty-one thousand, two hundred sixty-nine".