68179540 has 96 divisors (see below), whose sum is σ = 173859840. Its totient is φ = 22118400.

The previous prime is 68179523. The next prime is 68179541. The reversal of 68179540 is 4597186.

It is a super-2 number, since 2×68179540² = 9296899349223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68179493 and 68179502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68179541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88276 + ... + 89044.

It is an arithmetic number, because the mean of its divisors is an integer number (1811040).

Almost surely, 2^68179540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68179540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86929920).

68179540 is an abundant number, since it is smaller than the sum of its proper divisors (105680300).

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

68179540 is a wasteful number, since it uses less digits than its factorization.

68179540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 68179540 is about 8257.0902865356. The cubic root of 68179540 is about 408.5244201661.

The spelling of 68179540 in words is "sixty-eight million, one hundred seventy-nine thousand, five hundred forty".