68171481 has 24 divisors (see below), whose sum is σ = 112806720. Its totient is φ = 38861856.

The previous prime is 68171461. The next prime is 68171507. The reversal of 68171481 is 18417186.

68171481 is a `hidden beast` number, since 6 + 8 + 171 + 481 = 666.

It is not a de Polignac number, because 68171481 - 2⁶ = 68171417 is a prime.

It is a super-2 number, since 2×68171481² = 9294701643466722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68171461) 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, 31915 + ... + 33983.

It is an arithmetic number, because the mean of its divisors is an integer number (4700280).

Almost surely, 2^68171481 is an apocalyptic number.

It is an amenable number.

68171481 is a deficient number, since it is larger than the sum of its proper divisors (44635239).

68171481 is a wasteful number, since it uses less digits than its factorization.

68171481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605 (or 2602 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 68171481 is about 8256.6022672768. The cubic root of 68171481 is about 408.5083233134.

The spelling of 68171481 in words is "sixty-eight million, one hundred seventy-one thousand, four hundred eighty-one".