106047805 has 4 divisors (see below), whose sum is σ = 127257372. Its totient is φ = 84838240.

The previous prime is 106047803. The next prime is 106047841. The reversal of 106047805 is 508740601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53904964 + 52142841 = 7342^2 + 7221^2 .

It is not a de Polignac number, because 106047805 - 2¹ = 106047803 is a prime.

It is a super-2 number, since 2×106047805² = 22492273890636050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106047803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10604776 + ... + 10604785.

It is an arithmetic number, because the mean of its divisors is an integer number (31814343).

Almost surely, 2^106047805 is an apocalyptic number.

It is an amenable number.

106047805 is a deficient number, since it is larger than the sum of its proper divisors (21209567).

106047805 is an equidigital number, since it uses as much as digits as its factorization.

106047805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21209566.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 106047805 is about 10297.9514953218. The cubic root of 106047805 is about 473.3334840419. Note that the first 3 decimals are identical.

The spelling of 106047805 in words is "one hundred six million, forty-seven thousand, eight hundred five".