66948886 has 8 divisors (see below), whose sum is σ = 101156760. Its totient is φ = 33229968.

The previous prime is 66948877. The next prime is 66948887. The reversal of 66948886 is 68884966.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66948887) 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 3 ways as a sum of consecutive naturals, for example, 121896 + ... + 122443.

It is an arithmetic number, because the mean of its divisors is an integer number (12644595).

Almost surely, 2^66948886 is an apocalyptic number.

66948886 is a deficient number, since it is larger than the sum of its proper divisors (34207874).

66948886 is a wasteful number, since it uses less digits than its factorization.

66948886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244478.

The product of its digits is 3981312, while the sum is 55.

The square root of 66948886 is about 8182.2298916616. The cubic root of 66948886 is about 406.0514992063.

The spelling of 66948886 in words is "sixty-six million, nine hundred forty-eight thousand, eight hundred eighty-six".