166618752 has 128 divisors (see below), whose sum is σ = 478094400. Its totient is φ = 51240960.

The previous prime is 166618747. The next prime is 166618759. The reversal of 166618752 is 257816661.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (166618759) 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, 298858 + ... + 299414.

Almost surely, 2^166618752 is an apocalyptic number.

166618752 is a gapful number since it is divisible by the number (12) 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 166618752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239047200).

166618752 is an abundant number, since it is smaller than the sum of its proper divisors (311475648).

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

166618752 is a wasteful number, since it uses less digits than its factorization.

166618752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 622 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 166618752 is about 12908.0886269037. The cubic root of 166618752 is about 550.2684661801.

The spelling of 166618752 in words is "one hundred sixty-six million, six hundred eighteen thousand, seven hundred fifty-two".