68079820 has 48 divisors (see below), whose sum is σ = 149415840. Its totient is φ = 26023424.

The previous prime is 68079799. The next prime is 68079827. The reversal of 68079820 is 2897086.

It is not an unprimeable number, because it can be changed into a prime (68079827) 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 15 ways as a sum of consecutive naturals, for example, 61512 + ... + 62608.

It is an arithmetic number, because the mean of its divisors is an integer number (3112830).

Almost surely, 2^68079820 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 68079820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74707920).

68079820 is an abundant number, since it is smaller than the sum of its proper divisors (81336020).

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

68079820 is a wasteful number, since it uses less digits than its factorization.

68079820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 68079820 is about 8251.0496301986. The cubic root of 68079820 is about 408.3251525040.

The spelling of 68079820 in words is "sixty-eight million, seventy-nine thousand, eight hundred twenty".