68223870 has 320 divisors, whose sum is σ = 234178560. Its totient is φ = 13996800.

The previous prime is 68223833. The next prime is 68223899. The reversal of 68223870 is 7832286.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 2200755 + ... + 2200785.

It is an arithmetic number, because the mean of its divisors is an integer number (731808).

Almost surely, 2^68223870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68223870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117089280).

68223870 is an abundant number, since it is smaller than the sum of its proper divisors (165954690).

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

68223870 is a wasteful number, since it uses less digits than its factorization.

68223870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 68223870 is about 8259.7742099890. The cubic root of 68223870 is about 408.6129411699.

The spelling of 68223870 in words is "sixty-eight million, two hundred twenty-three thousand, eight hundred seventy".