66147166 has 4 divisors (see below), whose sum is σ = 99220752. Its totient is φ = 33073582.

The previous prime is 66147163. The next prime is 66147217. The reversal of 66147166 is 66174166.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66147163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16536790 + ... + 16536793.

It is an arithmetic number, because the mean of its divisors is an integer number (24805188).

Almost surely, 2^66147166 is an apocalyptic number.

66147166 is a deficient number, since it is larger than the sum of its proper divisors (33073586).

66147166 is a wasteful number, since it uses less digits than its factorization.

66147166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33073585.

The product of its digits is 36288, while the sum is 37.

The square root of 66147166 is about 8133.0908023949. The cubic root of 66147166 is about 404.4241493515.

Subtracting 66147166 from its reverse (66174166), we obtain a cube (27000 = 30³).

The spelling of 66147166 in words is "sixty-six million, one hundred forty-seven thousand, one hundred sixty-six".