106809907 has 4 divisors (see below), whose sum is σ = 111453840. Its totient is φ = 102165976.

The previous prime is 106809889. The next prime is 106809949. The reversal of 106809907 is 709908601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709908601 = 113 ⋅6282377.

It is a cyclic number.

It is not a de Polignac number, because 106809907 - 2⁷ = 106809779 is a prime.

It is a super-2 number, since 2×106809907² = 22816712466697298, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) 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 self number, because there is not a number n which added to its sum of digits gives 106809907.

It is not an unprimeable number, because it can be changed into a prime (106809107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2321932 + ... + 2321977.

It is an arithmetic number, because the mean of its divisors is an integer number (27863460).

Almost surely, 2^106809907 is an apocalyptic number.

106809907 is a deficient number, since it is larger than the sum of its proper divisors (4643933).

106809907 is an equidigital number, since it uses as much as digits as its factorization.

106809907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643932.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 106809907 is about 10334.8878561889. The cubic root of 106809907 is about 474.4646333867.

The spelling of 106809907 in words is "one hundred six million, eight hundred nine thousand, nine hundred seven".