66173214 has 32 divisors (see below), whose sum is σ = 140793120. Its totient is φ = 20662272.

The previous prime is 66173213. The next prime is 66173297. The reversal of 66173214 is 41237166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66173213) 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, 21942 + ... + 24774.

It is an arithmetic number, because the mean of its divisors is an integer number (4399785).

Almost surely, 2^66173214 is an apocalyptic number.

66173214 is an abundant number, since it is smaller than the sum of its proper divisors (74619906).

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

66173214 is a wasteful number, since it uses less digits than its factorization.

66173214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084.

The product of its digits is 6048, while the sum is 30.

The square root of 66173214 is about 8134.6920040036. The cubic root of 66173214 is about 404.4772282582.

The spelling of 66173214 in words is "sixty-six million, one hundred seventy-three thousand, two hundred fourteen".