166635560 has 64 divisors (see below), whose sum is σ = 461462400. Its totient is φ = 52736256.

The previous prime is 166635559. The next prime is 166635577. The reversal of 166635560 is 65536661.

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 15 ways as a sum of consecutive naturals, for example, 19250 + ... + 26529.

It is an arithmetic number, because the mean of its divisors is an integer number (7210350).

Almost surely, 2^166635560 is an apocalyptic number.

166635560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166635560 is an abundant number, since it is smaller than the sum of its proper divisors (294826840).

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

166635560 is a wasteful number, since it uses less digits than its factorization.

166635560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45810 (or 45806 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 166635560 is about 12908.7396751193. The cubic root of 166635560 is about 550.2869687021.

It can be divided in two parts, 166635 and 560, that multiplied together give a square (93315600 = 9660²).

The spelling of 166635560 in words is "one hundred sixty-six million, six hundred thirty-five thousand, five hundred sixty".