166487508 has 96 divisors (see below), whose sum is σ = 473397120. Its totient is φ = 50181120.

The previous prime is 166487473. The next prime is 166487509. The reversal of 166487508 is 805784661.

It is a happy number.

166487508 is a `hidden beast` number, since 1 + 6 + 64 + 87 + 508 = 666.

166487508 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166487509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419166 + ... + 419562.

It is an arithmetic number, because the mean of its divisors is an integer number (4931220).

Almost surely, 2^166487508 is an apocalyptic number.

166487508 is a gapful number since it is divisible by the number (18) 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 166487508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236698560).

166487508 is an abundant number, since it is smaller than the sum of its proper divisors (306909612).

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

166487508 is a wasteful number, since it uses less digits than its factorization.

166487508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 166487508 is about 12903.0038363166. The cubic root of 166487508 is about 550.1239478226.

The spelling of 166487508 in words is "one hundred sixty-six million, four hundred eighty-seven thousand, five hundred eight".