166506648 has 96 divisors (see below), whose sum is σ = 522977280. Its totient is φ = 43243200.

The previous prime is 166506647. The next prime is 166506679. The reversal of 166506648 is 846605661.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166506647) 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 23 ways as a sum of consecutive naturals, for example, 16233 + ... + 24423.

It is an arithmetic number, because the mean of its divisors is an integer number (5447680).

Almost surely, 2^166506648 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 166506648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261488640).

166506648 is an abundant number, since it is smaller than the sum of its proper divisors (356470632).

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

166506648 is a wasteful number, since it uses less digits than its factorization.

166506648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8229 (or 8214 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 166506648 is about 12903.7455027600. The cubic root of 166506648 is about 550.1450284210.

The spelling of 166506648 in words is "one hundred sixty-six million, five hundred six thousand, six hundred forty-eight".