166995648 has 112 divisors (see below), whose sum is σ = 494202720. Its totient is φ = 55296000.

The previous prime is 166995629. The next prime is 166995683. The reversal of 166995648 is 846599661.

It is a happy number.

166995648 is a `hidden beast` number, since 16 + 69 + 9 + 564 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 166995594 and 166995603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416248 + ... + 416648.

Almost surely, 2^166995648 is an apocalyptic number.

166995648 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 166995648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247101360).

166995648 is an abundant number, since it is smaller than the sum of its proper divisors (327207072).

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

166995648 is a wasteful number, since it uses less digits than its factorization.

166995648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 647 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 166995648 is about 12922.6795982877. The cubic root of 166995648 is about 550.6830609774.

The spelling of 166995648 in words is "one hundred sixty-six million, nine hundred ninety-five thousand, six hundred forty-eight".