166630560 has 96 divisors (see below), whose sum is σ = 537751872. Its totient is φ = 43345920.

The previous prime is 166630553. The next prime is 166630567. The reversal of 166630560 is 65036661.

It is an interprime number because it is at equal distance from previous prime (166630553) and next prime (166630567).

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (166630567) by changing a digit.

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, 15447 + ... + 23913.

It is an arithmetic number, because the mean of its divisors is an integer number (5601582).

Almost surely, 2^166630560 is an apocalyptic number.

166630560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166630560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268875936).

166630560 is an abundant number, since it is smaller than the sum of its proper divisors (371121312).

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

166630560 is a wasteful number, since it uses less digits than its factorization.

166630560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8526 (or 8518 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 166630560 is about 12908.5460064254. The cubic root of 166630560 is about 550.2814647501.

The spelling of 166630560 in words is "one hundred sixty-six million, six hundred thirty thousand, five hundred sixty".