66573318 has 32 divisors (see below), whose sum is σ = 152755200. Its totient is φ = 18947520.

The previous prime is 66573313. The next prime is 66573361. The reversal of 66573318 is 81337566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66573313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8458 + ... + 14306.

It is an arithmetic number, because the mean of its divisors is an integer number (4773600).

Almost surely, 2^66573318 is an apocalyptic number.

66573318 is an abundant number, since it is smaller than the sum of its proper divisors (86181882).

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

66573318 is a wasteful number, since it uses less digits than its factorization.

66573318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132.

The product of its digits is 90720, while the sum is 39.

The square root of 66573318 is about 8159.2473917635. The cubic root of 66573318 is about 405.2907894870.

The spelling of 66573318 in words is "sixty-six million, five hundred seventy-three thousand, three hundred eighteen".