166005530 has 8 divisors (see below), whose sum is σ = 298809972. Its totient is φ = 66402208.

The previous prime is 166005529. The next prime is 166005571. The reversal of 166005530 is 35500661.

It can be written as a sum of positive squares in 2 ways, for example, as 161213809 + 4791721 = 12697^2 + 2189^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 166005530.

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, 8300267 + ... + 8300286.

Almost surely, 2^166005530 is an apocalyptic number.

166005530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166005530 is a deficient number, since it is larger than the sum of its proper divisors (132804442).

166005530 is a wasteful number, since it uses less digits than its factorization.

166005530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16600560.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 166005530 is about 12884.3133305582. The cubic root of 166005530 is about 549.5925687794.

The spelling of 166005530 in words is "one hundred sixty-six million, five thousand, five hundred thirty".