68171136 has 64 divisors (see below), whose sum is σ = 197553600. Its totient is φ = 20656640.

The previous prime is 68171113. The next prime is 68171143. The reversal of 68171136 is 63117186.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 68171097 and 68171106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3846 + ... + 12293.

It is an arithmetic number, because the mean of its divisors is an integer number (3086775).

Almost surely, 2^68171136 is an apocalyptic number.

68171136 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

68171136 is an abundant number, since it is smaller than the sum of its proper divisors (129382464).

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

68171136 is a wasteful number, since it uses less digits than its factorization.

68171136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16167 (or 16155 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 68171136 is about 8256.5813748791. The cubic root of 68171136 is about 408.5076341904.

It can be divided in two parts, 681 and 71136, that added together give a palindrome (71817).

The spelling of 68171136 in words is "sixty-eight million, one hundred seventy-one thousand, one hundred thirty-six".