106902809 has 6 divisors (see below), whose sum is σ = 115758846. Its totient is φ = 98679360.

The previous prime is 106902799. The next prime is 106902823. The reversal of 106902809 is 908209601.

It can be written as a sum of positive squares in 3 ways, for example, as 235225 + 106667584 = 485^2 + 10328^2 .

It is not a de Polignac number, because 106902809 - 2⁴ = 106902793 is a prime.

It is a super-2 number, since 2×106902809² = 22856421144180962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106902839) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316112 + ... + 316449.

It is an arithmetic number, because the mean of its divisors is an integer number (19293141).

Almost surely, 2^106902809 is an apocalyptic number.

It is an amenable number.

106902809 is a deficient number, since it is larger than the sum of its proper divisors (8856037).

106902809 is an equidigital number, since it uses as much as digits as its factorization.

106902809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632587 (or 632574 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 106902809 is about 10339.3814611900. The cubic root of 106902809 is about 474.6021547742.

The spelling of 106902809 in words is "one hundred six million, nine hundred two thousand, eight hundred nine".