143666461 has 8 divisors (see below), whose sum is σ = 144955520. Its totient is φ = 142382448.

The previous prime is 143666447. The next prime is 143666519. The reversal of 143666461 is 164666341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143666461 - 2⁷ = 143666333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143666461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143666401) 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 7 ways as a sum of consecutive naturals, for example, 75520 + ... + 77398.

It is an arithmetic number, because the mean of its divisors is an integer number (18119440).

Almost surely, 2^143666461 is an apocalyptic number.

It is an amenable number.

143666461 is a deficient number, since it is larger than the sum of its proper divisors (1289059).

143666461 is a wasteful number, since it uses less digits than its factorization.

143666461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523.

The product of its digits is 62208, while the sum is 37.

The square root of 143666461 is about 11986.0944848604. The cubic root of 143666461 is about 523.7432810526.

The spelling of 143666461 in words is "one hundred forty-three million, six hundred sixty-six thousand, four hundred sixty-one".