143775668 has 24 divisors (see below), whose sum is σ = 263118912. Its totient is φ = 68612544.

The previous prime is 143775661. The next prime is 143775683. The reversal of 143775668 is 866577341.

143775668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143775661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48896 + ... + 51752.

It is an arithmetic number, because the mean of its divisors is an integer number (10963288).

Almost surely, 2^143775668 is an apocalyptic number.

It is an amenable number.

143775668 is a deficient number, since it is larger than the sum of its proper divisors (119343244).

143775668 is a wasteful number, since it uses less digits than its factorization.

143775668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431 (or 3429 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 143775668 is about 11990.6491900981. The cubic root of 143775668 is about 523.8759539713.

The spelling of 143775668 in words is "one hundred forty-three million, seven hundred seventy-five thousand, six hundred sixty-eight".