66166323 has 8 divisors (see below), whose sum is σ = 90606288. Its totient is φ = 42918624.

The previous prime is 66166291. The next prime is 66166327. The reversal of 66166323 is 32366166.

It is a happy number.

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

It is not a de Polignac number, because 66166323 - 2⁵ = 66166291 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (66166327) 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, 297936 + ... + 298157.

It is an arithmetic number, because the mean of its divisors is an integer number (11325786).

Almost surely, 2^66166323 is an apocalyptic number.

66166323 is a deficient number, since it is larger than the sum of its proper divisors (24439965).

66166323 is a wasteful number, since it uses less digits than its factorization.

66166323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596133.

The product of its digits is 23328, while the sum is 33.

The square root of 66166323 is about 8134.2684366819. The cubic root of 66166323 is about 404.4631875854.

The spelling of 66166323 in words is "sixty-six million, one hundred sixty-six thousand, three hundred twenty-three".