166531008 has 168 divisors, whose sum is σ = 530010624. Its totient is φ = 45964800.

The previous prime is 166531007. The next prime is 166531009. The reversal of 166531008 is 800135661.

166531008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166531007) and next prime (166531009).

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166531007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 291363 + ... + 291933.

Almost surely, 2^166531008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166531008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265005312).

166531008 is an abundant number, since it is smaller than the sum of its proper divisors (363479616).

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

166531008 is a wasteful number, since it uses less digits than its factorization.

166531008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 166531008 is about 12904.6893802214. The cubic root of 166531008 is about 550.1718559373.

Adding to 166531008 its reverse (800135661), we get a palindrome (966666669).

The spelling of 166531008 in words is "one hundred sixty-six million, five hundred thirty-one thousand, eight".