68306161 has 8 divisors (see below), whose sum is σ = 85161024. Its totient is φ = 53225520.

The previous prime is 68306149. The next prime is 68306167. The reversal of 68306161 is 16160386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68306161 - 2⁹ = 68305649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68306167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443470 + ... + 443623.

It is an arithmetic number, because the mean of its divisors is an integer number (10645128).

Almost surely, 2^68306161 is an apocalyptic number.

It is an amenable number.

68306161 is a deficient number, since it is larger than the sum of its proper divisors (16854863).

68306161 is a wasteful number, since it uses less digits than its factorization.

68306161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887111.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 68306161 is about 8264.7541403238. The cubic root of 68306161 is about 408.7771635413. Note that the first 3 decimals are identical.

The spelling of 68306161 in words is "sixty-eight million, three hundred six thousand, one hundred sixty-one".