71688162 has 32 divisors (see below), whose sum is σ = 176464512. Its totient is φ = 18906624.

The previous prime is 71688161. The next prime is 71688163. The reversal of 71688162 is 26188617.

It is an interprime number because it is at equal distance from previous prime (71688161) and next prime (71688163).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 71688162.

It is not an unprimeable number, because it can be changed into a prime (71688161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65103 + ... + 66194.

It is an arithmetic number, because the mean of its divisors is an integer number (5514516).

Almost surely, 2^71688162 is an apocalyptic number.

71688162 is an abundant number, since it is smaller than the sum of its proper divisors (104776350).

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

71688162 is a wasteful number, since it uses less digits than its factorization.

71688162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131322.

The product of its digits is 32256, while the sum is 39.

The square root of 71688162 is about 8466.8862045028. The cubic root of 71688162 is about 415.4152943417.

The spelling of 71688162 in words is "seventy-one million, six hundred eighty-eight thousand, one hundred sixty-two".