68920900 has 36 divisors (see below), whose sum is σ = 150490368. Its totient is φ = 27396640.

The previous prime is 68920889. The next prime is 68920913. The reversal of 68920900 is 902986.

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 11 ways as a sum of consecutive naturals, for example, 14637 + ... + 18763.

It is an arithmetic number, because the mean of its divisors is an integer number (4180288).

Almost surely, 2^68920900 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 68920900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75245184).

68920900 is an abundant number, since it is smaller than the sum of its proper divisors (81569468).

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

68920900 is a wasteful number, since it uses less digits than its factorization.

68920900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308 (or 4301 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 68920900 is about 8301.8612370962. The cubic root of 68920900 is about 409.9998017052. Note that the first 3 decimals are identical.

The spelling of 68920900 in words is "sixty-eight million, nine hundred twenty thousand, nine hundred".