66871148 has 12 divisors (see below), whose sum is σ = 118118952. Its totient is φ = 33122880.

The previous prime is 66871141. The next prime is 66871151. The reversal of 66871148 is 84117866.

It is not an unprimeable number, because it can be changed into a prime (66871141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77693 + ... + 78548.

It is an arithmetic number, because the mean of its divisors is an integer number (9843246).

Almost surely, 2^66871148 is an apocalyptic number.

It is an amenable number.

66871148 is a deficient number, since it is larger than the sum of its proper divisors (51247804).

66871148 is a wasteful number, since it uses less digits than its factorization.

66871148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156352 (or 156350 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 66871148 is about 8177.4780953543. The cubic root of 66871148 is about 405.8942754956.

The spelling of 66871148 in words is "sixty-six million, eight hundred seventy-one thousand, one hundred forty-eight".