166987008 has 90 divisors (see below), whose sum is σ = 497986874. Its totient is φ = 55655424.

The previous prime is 166986997. The next prime is 166987033. The reversal of 166987008 is 800789661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 156950784 + 10036224 = 12528^2 + 3168^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16710 + ... + 24762.

Almost surely, 2^166987008 is an apocalyptic number.

166987008 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 166987008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248993437).

166987008 is an abundant number, since it is smaller than the sum of its proper divisors (330999866).

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

166987008 is an frugal number, since it uses more digits than its factorization.

166987008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8081 (or 8058 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 166987008 is about 12922.3452979713. The cubic root of 166987008 is about 550.6735637565.

The spelling of 166987008 in words is "one hundred sixty-six million, nine hundred eighty-seven thousand, eight".