106438705 has 4 divisors (see below), whose sum is σ = 127726452. Its totient is φ = 85150960.

The previous prime is 106438699. The next prime is 106438753. The reversal of 106438705 is 507834601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507834601 = 43 ⋅11810107.

It can be written as a sum of positive squares in 2 ways, for example, as 16719921 + 89718784 = 4089^2 + 9472^2 .

It is not a de Polignac number, because 106438705 - 2¹¹ = 106436657 is a prime.

It is a super-2 number, since 2×106438705² = 22658395844154050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10643866 + ... + 10643875.

It is an arithmetic number, because the mean of its divisors is an integer number (31931613).

Almost surely, 2^106438705 is an apocalyptic number.

It is an amenable number.

106438705 is a deficient number, since it is larger than the sum of its proper divisors (21287747).

106438705 is an equidigital number, since it uses as much as digits as its factorization.

106438705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21287746.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 106438705 is about 10316.9135403957. The cubic root of 106438705 is about 473.9143515838.

The spelling of 106438705 in words is "one hundred six million, four hundred thirty-eight thousand, seven hundred five".