662143 has 2 divisors, whose sum is σ = 662144. Its totient is φ = 662142.

The previous prime is 662141. The next prime is 662149. The reversal of 662143 is 341266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662143 - 2¹ = 662141 is a prime.

Together with 662141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331071 + 331072.

It is an arithmetic number, because the mean of its divisors is an integer number (331072).

2⁶⁶²¹⁴³ is an apocalyptic number.

662143 is a deficient number, since it is larger than the sum of its proper divisors (1).

662143 is an equidigital number, since it uses as much as digits as its factorization.

662143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 662143 is about 813.7216968964. The cubic root of 662143 is about 87.1600085256.

It can be divided in two parts, 66 and 2143, that added together give a square (2209 = 47²).

The spelling of 662143 in words is "six hundred sixty-two thousand, one hundred forty-three".