66109214 has 16 divisors (see below), whose sum is σ = 100515600. Its totient is φ = 32607360.

The previous prime is 66109187. The next prime is 66109217. The reversal of 66109214 is 41290166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66109217) 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 7 ways as a sum of consecutive naturals, for example, 47894 + ... + 49254.

It is an arithmetic number, because the mean of its divisors is an integer number (6282225).

Almost surely, 2^66109214 is an apocalyptic number.

66109214 is a deficient number, since it is larger than the sum of its proper divisors (34406386).

66109214 is a wasteful number, since it uses less digits than its factorization.

66109214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 66109214 is about 8130.7572833039. The cubic root of 66109214 is about 404.3467883063.

The spelling of 66109214 in words is "sixty-six million, one hundred nine thousand, two hundred fourteen".