66162173 has 8 divisors (see below), whose sum is σ = 82488000. Its totient is φ = 51554880.

The previous prime is 66162169. The next prime is 66162203. The reversal of 66162173 is 37126166.

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

It is a cyclic number.

It is not a de Polignac number, because 66162173 - 2² = 66162169 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66167173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429548 + ... + 429701.

It is an arithmetic number, because the mean of its divisors is an integer number (10311000).

Almost surely, 2^66162173 is an apocalyptic number.

It is an amenable number.

66162173 is a deficient number, since it is larger than the sum of its proper divisors (16325827).

66162173 is a wasteful number, since it uses less digits than its factorization.

66162173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859267.

The product of its digits is 9072, while the sum is 32.

The square root of 66162173 is about 8134.0133390596. The cubic root of 66162173 is about 404.4547313333.

The spelling of 66162173 in words is "sixty-six million, one hundred sixty-two thousand, one hundred seventy-three".