166850001 has 12 divisors (see below), whose sum is σ = 253690320. Its totient is φ = 105378840.

The previous prime is 166849999. The next prime is 166850063. The reversal of 166850001 is 100058661.

It is not a de Polignac number, because 166850001 - 2¹ = 166849999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166850701) 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 11 ways as a sum of consecutive naturals, for example, 487695 + ... + 488036.

It is an arithmetic number, because the mean of its divisors is an integer number (21140860).

Almost surely, 2^166850001 is an apocalyptic number.

It is an amenable number.

166850001 is a deficient number, since it is larger than the sum of its proper divisors (86840319).

166850001 is a wasteful number, since it uses less digits than its factorization.

166850001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975756 (or 975753 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 166850001 is about 12917.0430439788. The cubic root of 166850001 is about 550.5229197495.

The spelling of 166850001 in words is "one hundred sixty-six million, eight hundred fifty thousand, one".