68685165 has 24 divisors (see below), whose sum is σ = 123465888. Its totient is φ = 36631440.

The previous prime is 68685163. The next prime is 68685179. The reversal of 68685165 is 56158686.

It is not a de Polignac number, because 68685165 - 2¹ = 68685163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68685165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68685161) 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, 27051 + ... + 29480.

It is an arithmetic number, because the mean of its divisors is an integer number (5144412).

Almost surely, 2^68685165 is an apocalyptic number.

It is an amenable number.

68685165 is a deficient number, since it is larger than the sum of its proper divisors (54780723).

68685165 is an equidigital number, since it uses as much as digits as its factorization.

68685165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56551 (or 56539 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 68685165 is about 8287.6513560839. The cubic root of 68685165 is about 409.5318173563.

The spelling of 68685165 in words is "sixty-eight million, six hundred eighty-five thousand, one hundred sixty-five".