67449408 has 112 divisors (see below), whose sum is σ = 195779136. Its totient is φ = 20367360.

The previous prime is 67449407. The next prime is 67449433. The reversal of 67449408 is 80494476.

It is a self number, because there is not a number n which added to its sum of digits gives 67449408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67449401) by changing a digit.

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, 152035 + ... + 152477.

It is an arithmetic number, because the mean of its divisors is an integer number (1748028).

Almost surely, 2^67449408 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 67449408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97889568).

67449408 is an abundant number, since it is smaller than the sum of its proper divisors (128329728).

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

67449408 is a wasteful number, since it uses less digits than its factorization.

67449408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 67449408 is about 8212.7588543680. The cubic root of 67449408 is about 407.0608927560.

The spelling of 67449408 in words is "sixty-seven million, four hundred forty-nine thousand, four hundred eight".