166001075 has 24 divisors (see below), whose sum is σ = 215142480. Its totient is φ = 126896000.

The previous prime is 166001071. The next prime is 166001111. The reversal of 166001075 is 570100661.

It is not a de Polignac number, because 166001075 - 2² = 166001071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166001071) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 72092 + ... + 74358.

It is an arithmetic number, because the mean of its divisors is an integer number (8964270).

Almost surely, 2^166001075 is an apocalyptic number.

166001075 is a deficient number, since it is larger than the sum of its proper divisors (49141405).

166001075 is a wasteful number, since it uses less digits than its factorization.

166001075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 166001075 is about 12884.1404447483. The cubic root of 166001075 is about 549.5876523633.

The spelling of 166001075 in words is "one hundred sixty-six million, one thousand, seventy-five".