66648914 has 16 divisors (see below), whose sum is σ = 104865408. Its totient is φ = 31732272.

The previous prime is 66648899. The next prime is 66648919. The reversal of 66648914 is 41984666.

It is not an unprimeable number, because it can be changed into a prime (66648919) 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, 6104 + ... + 13059.

It is an arithmetic number, because the mean of its divisors is an integer number (6554088).

Almost surely, 2^66648914 is an apocalyptic number.

66648914 is a deficient number, since it is larger than the sum of its proper divisors (38216494).

66648914 is a wasteful number, since it uses less digits than its factorization.

66648914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19249.

The product of its digits is 248832, while the sum is 44.

The square root of 66648914 is about 8163.8786125224. The cubic root of 66648914 is about 405.4441380748. Note that the first 3 decimals are identical.

The spelling of 66648914 in words is "sixty-six million, six hundred forty-eight thousand, nine hundred fourteen".