143664146 has 16 divisors (see below), whose sum is σ = 219314688. Its totient is φ = 70567200.

The previous prime is 143664097. The next prime is 143664167. The reversal of 143664146 is 641466341.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37751 + ... + 41381.

It is an arithmetic number, because the mean of its divisors is an integer number (13707168).

Almost surely, 2^143664146 is an apocalyptic number.

143664146 is a deficient number, since it is larger than the sum of its proper divisors (75650542).

143664146 is a wasteful number, since it uses less digits than its factorization.

143664146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977.

The product of its digits is 41472, while the sum is 35.

The square root of 143664146 is about 11985.9979142331. The cubic root of 143664146 is about 523.7404678880.

The spelling of 143664146 in words is "one hundred forty-three million, six hundred sixty-four thousand, one hundred forty-six".