68405184 has 84 divisors (see below), whose sum is σ = 198146416. Its totient is φ = 22560768.

The previous prime is 68405177. The next prime is 68405203. The reversal of 68405184 is 48150486.

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

It is a congruent number.

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, 58752 + ... + 59904.

Almost surely, 2^68405184 is an apocalyptic number.

68405184 is a gapful number since it is divisible by the number (64) 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 68405184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99073208).

68405184 is an abundant number, since it is smaller than the sum of its proper divisors (129741232).

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

68405184 is a wasteful number, since it uses less digits than its factorization.

68405184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 68405184 is about 8270.7426510562. The cubic root of 68405184 is about 408.9746020340.

The spelling of 68405184 in words is "sixty-eight million, four hundred five thousand, one hundred eighty-four".