66673408 has 36 divisors (see below), whose sum is σ = 136702720. Its totient is φ = 32431104.

The previous prime is 66673403. The next prime is 66673423. The reversal of 66673408 is 80437666.

66673408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66673403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5953 + ... + 12991.

Almost surely, 2^66673408 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 66673408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68351360).

66673408 is an abundant number, since it is smaller than the sum of its proper divisors (70029312).

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

66673408 is an equidigital number, since it uses as much as digits as its factorization.

66673408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7092 (or 7078 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 66673408 is about 8165.3786195130. The cubic root of 66673408 is about 405.4937999613.

It can be divided in two parts, 66673 and 408, that added together give a square (67081 = 259²).

The spelling of 66673408 in words is "sixty-six million, six hundred seventy-three thousand, four hundred eight".