143680643 has 2 divisors, whose sum is σ = 143680644. Its totient is φ = 143680642.

The previous prime is 143680637. The next prime is 143680699. The reversal of 143680643 is 346086341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 143680643 - 2⁴ = 143680627 is a prime.

It is not a weakly prime, because it can be changed into another prime (143680613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71840321 + 71840322.

It is an arithmetic number, because the mean of its divisors is an integer number (71840322).

Almost surely, 2^143680643 is an apocalyptic number.

143680643 is a deficient number, since it is larger than the sum of its proper divisors (1).

143680643 is an equidigital number, since it uses as much as digits as its factorization.

143680643 is an odious number, because the sum of its binary digits is odd.

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

The square root of 143680643 is about 11986.6860724722. The cubic root of 143680643 is about 523.7605142160.

The spelling of 143680643 in words is "one hundred forty-three million, six hundred eighty thousand, six hundred forty-three".