67105161 has 12 divisors (see below), whose sum is σ = 99549892. Its totient is φ = 43527456.

The previous prime is 67105141. The next prime is 67105187. The reversal of 67105161 is 16150176.

It can be written as a sum of positive squares in 2 ways, for example, as 62015625 + 5089536 = 7875^2 + 2256^2 .

It is not a de Polignac number, because 67105161 - 2⁹ = 67104649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67105141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100426 + ... + 101091.

Almost surely, 2^67105161 is an apocalyptic number.

It is an amenable number.

67105161 is a deficient number, since it is larger than the sum of its proper divisors (32444731).

67105161 is a wasteful number, since it uses less digits than its factorization.

67105161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201560 (or 201557 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 67105161 is about 8191.7739836985. The cubic root of 67105161 is about 406.3671947171.

The spelling of 67105161 in words is "sixty-seven million, one hundred five thousand, one hundred sixty-one".