66673394 has 16 divisors (see below), whose sum is σ = 105830880. Its totient is φ = 31415040.

The previous prime is 66673361. The next prime is 66673403. The reversal of 66673394 is 49337666.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2789 + ... + 11879.

It is an arithmetic number, because the mean of its divisors is an integer number (6614430).

Almost surely, 2^66673394 is an apocalyptic number.

66673394 is a deficient number, since it is larger than the sum of its proper divisors (39157486).

66673394 is a wasteful number, since it uses less digits than its factorization.

66673394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9305.

The product of its digits is 489888, while the sum is 44.

The square root of 66673394 is about 8165.3777622349. The cubic root of 66673394 is about 405.4937715796.

The spelling of 66673394 in words is "sixty-six million, six hundred seventy-three thousand, three hundred ninety-four".