66140108 has 6 divisors (see below), whose sum is σ = 115745196. Its totient is φ = 33070052.

The previous prime is 66140101. The next prime is 66140119. The reversal of 66140108 is 80104166.

It is not an unprimeable number, because it can be changed into a prime (66140101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8267510 + ... + 8267517.

It is an arithmetic number, because the mean of its divisors is an integer number (19290866).

Almost surely, 2^66140108 is an apocalyptic number.

It is an amenable number.

66140108 is a deficient number, since it is larger than the sum of its proper divisors (49605088).

66140108 is a wasteful number, since it uses less digits than its factorization.

66140108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16535031 (or 16535029 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 66140108 is about 8132.6568844382. The cubic root of 66140108 is about 404.4097646225.

The spelling of 66140108 in words is "sixty-six million, one hundred forty thousand, one hundred eight".