67736161 has 2 divisors, whose sum is σ = 67736162. Its totient is φ = 67736160.

The previous prime is 67736153. The next prime is 67736191. The reversal of 67736161 is 16163776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65302561 + 2433600 = 8081^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 67736161 - 2³ = 67736153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67736161.

It is not a weakly prime, because it can be changed into another prime (67736191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33868080 + 33868081.

It is an arithmetic number, because the mean of its divisors is an integer number (33868081).

Almost surely, 2^67736161 is an apocalyptic number.

It is an amenable number.

67736161 is a deficient number, since it is larger than the sum of its proper divisors (1).

67736161 is an equidigital number, since it uses as much as digits as its factorization.

67736161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 37.

The square root of 67736161 is about 8230.1981142619. The cubic root of 67736161 is about 407.6369339194.

The spelling of 67736161 in words is "sixty-seven million, seven hundred thirty-six thousand, one hundred sixty-one".