67730544 has 180 divisors, whose sum is σ = 228791160. Its totient is φ = 18627840.

The previous prime is 67730543. The next prime is 67730549. The reversal of 67730544 is 44503776.

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

It is a junction number, because it is equal to n+sod(n) for n = 67730499 and 67730508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67730543) 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 35 ways as a sum of consecutive naturals, for example, 204459 + ... + 204789.

It is an arithmetic number, because the mean of its divisors is an integer number (1271062).

Almost surely, 2^67730544 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 67730544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114395580).

67730544 is an abundant number, since it is smaller than the sum of its proper divisors (161060616).

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

67730544 is a wasteful number, since it uses less digits than its factorization.

67730544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 67730544 is about 8229.8568638829. The cubic root of 67730544 is about 407.6256658861.

The spelling of 67730544 in words is "sixty-seven million, seven hundred thirty thousand, five hundred forty-four".