67408404 has 48 divisors (see below), whose sum is σ = 181630848. Its totient is φ = 19058688.

The previous prime is 67408379. The next prime is 67408427. The reversal of 67408404 is 40480476.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4012 + ... + 12284.

It is an arithmetic number, because the mean of its divisors is an integer number (3783976).

Almost surely, 2^67408404 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 67408404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90815424).

67408404 is an abundant number, since it is smaller than the sum of its proper divisors (114222444).

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

67408404 is a wasteful number, since it uses less digits than its factorization.

67408404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8384 (or 8382 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 67408404 is about 8210.2621151824. The cubic root of 67408404 is about 406.9783889021.

The spelling of 67408404 in words is "sixty-seven million, four hundred eight thousand, four hundred four".