166654143 has 12 divisors (see below), whose sum is σ = 242166288. Its totient is φ = 110436480.

The previous prime is 166654129. The next prime is 166654177. The reversal of 166654143 is 341456661.

It is a happy number.

It is not a de Polignac number, because 166654143 - 2⁶ = 166654079 is a prime.

It is a hoax number, since the sum of its digits (36) 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 = 166654098 and 166654107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166654183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53938 + ... + 56943.

It is an arithmetic number, because the mean of its divisors is an integer number (20180524).

Almost surely, 2^166654143 is an apocalyptic number.

166654143 is a deficient number, since it is larger than the sum of its proper divisors (75512145).

166654143 is a wasteful number, since it uses less digits than its factorization.

166654143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111054 (or 111051 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 166654143 is about 12909.4594387217. The cubic root of 166654143 is about 550.3074237251.

The spelling of 166654143 in words is "one hundred sixty-six million, six hundred fifty-four thousand, one hundred forty-three".