164523666 has 8 divisors (see below), whose sum is σ = 329047344. Its totient is φ = 54841220.

The previous prime is 164523661. The next prime is 164523673. The reversal of 164523666 is 666325461.

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

164523666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (164523661) 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, 13710300 + ... + 13710311.

It is an arithmetic number, because the mean of its divisors is an integer number (41130918).

Almost surely, 2^164523666 is an apocalyptic number.

164523666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164523666 is a wasteful number, since it uses less digits than its factorization.

164523666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27420616.

The product of its digits is 155520, while the sum is 39.

The square root of 164523666 is about 12826.6779019355. The cubic root of 164523666 is about 547.9523485836.

The spelling of 164523666 in words is "one hundred sixty-four million, five hundred twenty-three thousand, six hundred sixty-six".