106643443 has 4 divisors (see below), whose sum is σ = 107993440. Its totient is φ = 105293448.

The previous prime is 106643429. The next prime is 106643477. The reversal of 106643443 is 344346601.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 106643443 - 2⁹ = 106642931 is a prime.

It is a super-2 number, since 2×106643443² = 22745647869788498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106643413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674880 + ... + 675037.

It is an arithmetic number, because the mean of its divisors is an integer number (26998360).

Almost surely, 2^106643443 is an apocalyptic number.

106643443 is a deficient number, since it is larger than the sum of its proper divisors (1349997).

106643443 is an equidigital number, since it uses as much as digits as its factorization.

106643443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349996.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 106643443 is about 10326.8312177550. The cubic root of 106643443 is about 474.2180197236.

The spelling of 106643443 in words is "one hundred six million, six hundred forty-three thousand, four hundred forty-three".