68217165 has 24 divisors (see below), whose sum is σ = 119578680. Its totient is φ = 35971584.

The previous prime is 68217151. The next prime is 68217167. The reversal of 68217165 is 56171286.

It can be written as a sum of positive squares in 4 ways, for example, as 6084 + 68211081 = 78^2 + 8259^2 .

It is not a de Polignac number, because 68217165 - 2⁵ = 68217133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68217167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4512 + ... + 12521.

It is an arithmetic number, because the mean of its divisors is an integer number (4982445).

Almost surely, 2^68217165 is an apocalyptic number.

It is an amenable number.

68217165 is a deficient number, since it is larger than the sum of its proper divisors (51361515).

68217165 is a wasteful number, since it uses less digits than its factorization.

68217165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17133 (or 17130 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 68217165 is about 8259.3683172504. The cubic root of 68217165 is about 408.5995546552.

The spelling of 68217165 in words is "sixty-eight million, two hundred seventeen thousand, one hundred sixty-five".