143055666 has 64 divisors (see below), whose sum is σ = 354211200. Its totient is φ = 42493248.

The previous prime is 143055623. The next prime is 143055673. The reversal of 143055666 is 666550341.

143055666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 523³-1.

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 Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 143055666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16845 + ... + 23871.

It is an arithmetic number, because the mean of its divisors is an integer number (5534550).

Almost surely, 2^143055666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143055666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177105600).

143055666 is an abundant number, since it is smaller than the sum of its proper divisors (211155534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143055666 is a wasteful number, since it uses less digits than its factorization.

143055666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080 (or 7074 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 143055666 is about 11960.5880290227. The cubic root of 143055666 is about 522.9999987814. Note that the first 5 decimals are identical.

The spelling of 143055666 in words is "one hundred forty-three million, fifty-five thousand, six hundred sixty-six".