68171616 has 36 divisors (see below), whose sum is σ = 193863852. Its totient is φ = 22723776.

The previous prime is 68171603. The next prime is 68171633. The reversal of 68171616 is 61617186.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118066 + ... + 118641.

It is an arithmetic number, because the mean of its divisors is an integer number (5385107).

Almost surely, 2^68171616 is an apocalyptic number.

It is an amenable number.

68171616 is an abundant number, since it is smaller than the sum of its proper divisors (125692236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68171616 is a wasteful number, since it uses less digits than its factorization.

68171616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236723 (or 236712 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 68171616 is about 8256.6104425484. The cubic root of 68171616 is about 408.5085929696.

The spelling of 68171616 in words is "sixty-eight million, one hundred seventy-one thousand, six hundred sixteen".