68243880 has 32 divisors (see below), whose sum is σ = 204732000. Its totient is φ = 18198336.

The previous prime is 68243869. The next prime is 68243887. The reversal of 68243880 is 8834286.

It is not an unprimeable number, because it can be changed into a prime (68243887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284230 + ... + 284469.

It is an arithmetic number, because the mean of its divisors is an integer number (6397875).

Almost surely, 2^68243880 is an apocalyptic number.

68243880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68243880 is an abundant number, since it is smaller than the sum of its proper divisors (136488120).

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

68243880 is a wasteful number, since it uses less digits than its factorization.

68243880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568713 (or 568709 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 68243880 is about 8260.9854133753. The cubic root of 68243880 is about 408.6528858682.

The spelling of 68243880 in words is "sixty-eight million, two hundred forty-three thousand, eight hundred eighty".