143668466 has 4 divisors (see below), whose sum is σ = 215502702. Its totient is φ = 71834232.

The previous prime is 143668451. The next prime is 143668471. The reversal of 143668466 is 664866341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 111915241 + 31753225 = 10579^2 + 5635^2 .

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 as a sum of consecutive naturals, namely, 35917115 + ... + 35917118.

Almost surely, 2^143668466 is an apocalyptic number.

143668466 is a deficient number, since it is larger than the sum of its proper divisors (71834236).

143668466 is an equidigital number, since it uses as much as digits as its factorization.

143668466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71834235.

The product of its digits is 497664, while the sum is 44.

The square root of 143668466 is about 11986.1781231550. The cubic root of 143668466 is about 523.7457174839.

The spelling of 143668466 in words is "one hundred forty-three million, six hundred sixty-eight thousand, four hundred sixty-six".