67055761 has 2 divisors, whose sum is σ = 67055762. Its totient is φ = 67055760.

The previous prime is 67055749. The next prime is 67055767. The reversal of 67055761 is 16755076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66324736 + 731025 = 8144^2 + 855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67055761 is a prime.

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 67055761.

It is not a weakly prime, because it can be changed into another prime (67055767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33527880 + 33527881.

It is an arithmetic number, because the mean of its divisors is an integer number (33527881).

Almost surely, 2^67055761 is an apocalyptic number.

It is an amenable number.

67055761 is a deficient number, since it is larger than the sum of its proper divisors (1).

67055761 is an equidigital number, since it uses as much as digits as its factorization.

67055761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 67055761 is about 8188.7582086663. The cubic root of 67055761 is about 406.2674534198.

The spelling of 67055761 in words is "sixty-seven million, fifty-five thousand, seven hundred sixty-one".