68102161 has 4 divisors (see below), whose sum is σ = 68482800. Its totient is φ = 67721524.

The previous prime is 68102159. The next prime is 68102171. The reversal of 68102161 is 16120186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68102161 - 2¹ = 68102159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68102141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190051 + ... + 190408.

It is an arithmetic number, because the mean of its divisors is an integer number (17120700).

Almost surely, 2^68102161 is an apocalyptic number.

It is an amenable number.

68102161 is a deficient number, since it is larger than the sum of its proper divisors (380639).

68102161 is a wasteful number, since it uses less digits than its factorization.

68102161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380638.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 68102161 is about 8252.4033469045. The cubic root of 68102161 is about 408.3698127990.

The spelling of 68102161 in words is "sixty-eight million, one hundred two thousand, one hundred sixty-one".