66207814 has 8 divisors (see below), whose sum is σ = 100939968. Its totient is φ = 32561160.

The previous prime is 66207811. The next prime is 66207821. The reversal of 66207814 is 41870266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66207814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66207811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271222 + ... + 271465.

It is an arithmetic number, because the mean of its divisors is an integer number (12617496).

Almost surely, 2^66207814 is an apocalyptic number.

66207814 is a deficient number, since it is larger than the sum of its proper divisors (34732154).

66207814 is a wasteful number, since it uses less digits than its factorization.

66207814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542750.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 66207814 is about 8136.8184199968. The cubic root of 66207814 is about 404.5477123347.

The spelling of 66207814 in words is "sixty-six million, two hundred seven thousand, eight hundred fourteen".