68820700 has 72 divisors (see below), whose sum is σ = 162302112. Its totient is φ = 25178880.

The previous prime is 68820617. The next prime is 68820701. The reversal of 68820700 is 702886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68820701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216942 + ... + 217258.

It is an arithmetic number, because the mean of its divisors is an integer number (2254196).

Almost surely, 2^68820700 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 68820700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81151056).

68820700 is an abundant number, since it is smaller than the sum of its proper divisors (93481412).

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

68820700 is a wasteful number, since it uses less digits than its factorization.

68820700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 68820700 is about 8295.8242507903. The cubic root of 68820700 is about 409.8010138914.

The spelling of 68820700 in words is "sixty-eight million, eight hundred twenty thousand, seven hundred".