166036566 has 8 divisors (see below), whose sum is σ = 332073144. Its totient is φ = 55345520.

The previous prime is 166036547. The next prime is 166036579. The reversal of 166036566 is 665630661.

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

166036566 is an admirable number.

It is a congruent number.

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, 13836375 + ... + 13836386.

It is an arithmetic number, because the mean of its divisors is an integer number (41509143).

Almost surely, 2^166036566 is an apocalyptic number.

166036566 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.

166036566 is a wasteful number, since it uses less digits than its factorization.

166036566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27672766.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 166036566 is about 12885.5176845946. The cubic root of 166036566 is about 549.6268168194.

It can be divided in two parts, 1660 and 36566, that added together give a triangular number (38226 = T₂₇₆).

The spelling of 166036566 in words is "one hundred sixty-six million, thirty-six thousand, five hundred sixty-six".