143660889 has 6 divisors (see below), whose sum is σ = 207510186. Its totient is φ = 95773920.

The previous prime is 143660887. The next prime is 143660911. The reversal of 143660889 is 988066341.

143660889 is a `hidden beast` number, since 1 + 4 + 36 + 608 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 89019225 + 54641664 = 9435^2 + 7392^2 .

It is not a de Polignac number, because 143660889 - 2¹ = 143660887 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143660887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7981152 + ... + 7981169.

It is an arithmetic number, because the mean of its divisors is an integer number (34585031).

Almost surely, 2^143660889 is an apocalyptic number.

It is an amenable number.

143660889 is a deficient number, since it is larger than the sum of its proper divisors (63849297).

143660889 is a wasteful number, since it uses less digits than its factorization.

143660889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15962327 (or 15962324 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 143660889 is about 11985.8620465947. The cubic root of 143660889 is about 523.7365099633.

The spelling of 143660889 in words is "one hundred forty-three million, six hundred sixty thousand, eight hundred eighty-nine".