166001648 has 20 divisors (see below), whose sum is σ = 322427280. Its totient is φ = 82794624.

The previous prime is 166001639. The next prime is 166001653. The reversal of 166001648 is 846100661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6140 + ... + 19227.

It is an arithmetic number, because the mean of its divisors is an integer number (16121364).

Almost surely, 2^166001648 is an apocalyptic number.

It is an amenable number.

166001648 is a deficient number, since it is larger than the sum of its proper divisors (156425632).

166001648 is a wasteful number, since it uses less digits than its factorization.

166001648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25784 (or 25778 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 166001648 is about 12884.1626813697. The cubic root of 166001648 is about 549.5882847153.

The spelling of 166001648 in words is "one hundred sixty-six million, one thousand, six hundred forty-eight".