66666914 has 8 divisors (see below), whose sum is σ = 100106688. Its totient is φ = 33298020.

The previous prime is 66666913. The next prime is 66666923. The reversal of 66666914 is 41966666.

66666914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (66666913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15302 + ... + 19169.

It is an arithmetic number, because the mean of its divisors is an integer number (12513336).

Almost surely, 2^66666914 is an apocalyptic number.

66666914 is a deficient number, since it is larger than the sum of its proper divisors (33439774).

66666914 is a wasteful number, since it uses less digits than its factorization.

66666914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35440.

The product of its digits is 279936, while the sum is 44.

The square root of 66666914 is about 8164.9809552748. The cubic root of 66666914 is about 405.4806344814.

The spelling of 66666914 in words is "sixty-six million, six hundred sixty-six thousand, nine hundred fourteen".