106666143 has 16 divisors (see below), whose sum is σ = 151129440. Its totient is φ = 66918528.

The previous prime is 106666141. The next prime is 106666151. The reversal of 106666143 is 341666601.

It is not a de Polignac number, because 106666143 - 2¹ = 106666141 is a prime.

It is a super-2 number, since 2×106666143² = 22755332124992898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106666141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11121 + ... + 18357.

It is an arithmetic number, because the mean of its divisors is an integer number (9445590).

Almost surely, 2^106666143 is an apocalyptic number.

106666143 is a deficient number, since it is larger than the sum of its proper divisors (44463297).

106666143 is an frugal number, since it uses more digits than its factorization.

106666143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291 (or 7257 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 106666143 is about 10327.9302379518. The cubic root of 106666143 is about 474.2516645030.

The spelling of 106666143 in words is "one hundred six million, six hundred sixty-six thousand, one hundred forty-three".