166656648 has 64 divisors (see below), whose sum is σ = 429327360. Its totient is φ = 53879616.

The previous prime is 166656647. The next prime is 166656709. The reversal of 166656648 is 846656661.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 166656597 and 166656606.

It is not an unprimeable number, because it can be changed into a prime (166656647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171861 + ... + 172827.

It is an arithmetic number, because the mean of its divisors is an integer number (6708240).

Almost surely, 2^166656648 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 166656648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214663680).

166656648 is an abundant number, since it is smaller than the sum of its proper divisors (262670712).

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

166656648 is a wasteful number, since it uses less digits than its factorization.

166656648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1182 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 166656648 is about 12909.5564602352. The cubic root of 166656648 is about 550.3101809587.

The spelling of 166656648 in words is "one hundred sixty-six million, six hundred fifty-six thousand, six hundred forty-eight".