66667270 has 16 divisors (see below), whose sum is σ = 120183120. Its totient is φ = 26626464.

The previous prime is 66667261. The next prime is 66667277. The reversal of 66667270 is 7276666.

66667270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66667277) 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 7 ways as a sum of consecutive naturals, for example, 2389 + ... + 11791.

It is an arithmetic number, because the mean of its divisors is an integer number (7511445).

Almost surely, 2^66667270 is an apocalyptic number.

66667270 is a deficient number, since it is larger than the sum of its proper divisors (53515850).

66667270 is a wasteful number, since it uses less digits than its factorization.

66667270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10119.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 66667270 is about 8165.0027556640. The cubic root of 66667270 is about 405.4813562329.

The spelling of 66667270 in words is "sixty-six million, six hundred sixty-seven thousand, two hundred seventy".