143666644 has 12 divisors (see below), whose sum is σ = 274272768. Its totient is φ = 65303000.

The previous prime is 143666629. The next prime is 143666683. The reversal of 143666644 is 446666341.

It is a junction number, because it is equal to n+sod(n) for n = 143666597 and 143666606.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1632532 + ... + 1632619.

It is an arithmetic number, because the mean of its divisors is an integer number (22856064).

Almost surely, 2^143666644 is an apocalyptic number.

It is an amenable number.

143666644 is a deficient number, since it is larger than the sum of its proper divisors (130606124).

143666644 is a wasteful number, since it uses less digits than its factorization.

143666644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265166 (or 3265164 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The square root of 143666644 is about 11986.1021187040. The cubic root of 143666644 is about 523.7435034310.

The spelling of 143666644 in words is "one hundred forty-three million, six hundred sixty-six thousand, six hundred forty-four".