68221800 has 144 divisors (see below), whose sum is σ = 231547680. Its totient is φ = 18000000.

The previous prime is 68221771. The next prime is 68221801. The reversal of 68221800 is 812286.

It is not an unprimeable number, because it can be changed into a prime (68221801) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 271675 + ... + 271925.

It is an arithmetic number, because the mean of its divisors is an integer number (1607970).

Almost surely, 2^68221800 is an apocalyptic number.

68221800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68221800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115773840).

68221800 is an abundant number, since it is smaller than the sum of its proper divisors (163325880).

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

68221800 is a wasteful number, since it uses less digits than its factorization.

68221800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 68221800 is about 8259.6489029498. The cubic root of 68221800 is about 408.6088085140.

The spelling of 68221800 in words is "sixty-eight million, two hundred twenty-one thousand, eight hundred".