164432666 has 8 divisors (see below), whose sum is σ = 246900864. Its totient is φ = 82132380.

The previous prime is 164432647. The next prime is 164432689. The reversal of 164432666 is 666234461.

It is a happy number.

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

It is a super-3 number, since 3×164432666³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39500 + ... + 43463.

It is an arithmetic number, because the mean of its divisors is an integer number (30862608).

Almost surely, 2^164432666 is an apocalyptic number.

164432666 is a deficient number, since it is larger than the sum of its proper divisors (82468198).

164432666 is an equidigital number, since it uses as much as digits as its factorization.

164432666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83956.

The product of its digits is 124416, while the sum is 38.

The square root of 164432666 is about 12823.1301170970. The cubic root of 164432666 is about 547.8513036273.

The spelling of 164432666 in words is "one hundred sixty-four million, four hundred thirty-two thousand, six hundred sixty-six".