68781800 has 48 divisors (see below), whose sum is σ = 160555200. Its totient is φ = 27403200.

The previous prime is 68781793. The next prime is 68781871. The reversal of 68781800 is 818786.

It is a super-2 number, since 2×68781800² = 9461872022480000, which contains 22 as substring.

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, 65681 + ... + 66719.

It is an arithmetic number, because the mean of its divisors is an integer number (3344900).

Almost surely, 2^68781800 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 68781800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80277600).

68781800 is an abundant number, since it is smaller than the sum of its proper divisors (91773400).

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

68781800 is a wasteful number, since it uses less digits than its factorization.

68781800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 68781800 is about 8293.4793663456. The cubic root of 68781800 is about 409.7237877859.

The spelling of 68781800 in words is "sixty-eight million, seven hundred eighty-one thousand, eight hundred".