66673400 has 24 divisors (see below), whose sum is σ = 155016120. Its totient is φ = 26669280.

The previous prime is 66673361. The next prime is 66673403. The reversal of 66673400 is 437666.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166484 + ... + 166883.

It is an arithmetic number, because the mean of its divisors is an integer number (6459005).

Almost surely, 2^66673400 is an apocalyptic number.

It is an amenable number.

66673400 is an abundant number, since it is smaller than the sum of its proper divisors (88342720).

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

66673400 is a wasteful number, since it uses less digits than its factorization.

66673400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333383 (or 333374 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 66673400 is about 8165.3781296398. The cubic root of 66673400 is about 405.4937837431.

The spelling of 66673400 in words is "sixty-six million, six hundred seventy-three thousand, four hundred".