68809104 has 240 divisors, whose sum is σ = 243734400. Its totient is φ = 17639424.

The previous prime is 68809099. The next prime is 68809109. The reversal of 68809104 is 40190886.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68809099) and next prime (68809109).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (68809109) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 773092 + ... + 773180.

It is an arithmetic number, because the mean of its divisors is an integer number (1015560).

Almost surely, 2^68809104 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 68809104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121867200).

68809104 is an abundant number, since it is smaller than the sum of its proper divisors (174925296).

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

68809104 is a wasteful number, since it uses less digits than its factorization.

68809104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 68809104 is about 8295.1253155091. The cubic root of 68809104 is about 409.7779960132. Note that the first 3 decimals are identical.

The spelling of 68809104 in words is "sixty-eight million, eight hundred nine thousand, one hundred four".