106697809 has 2 divisors, whose sum is σ = 106697810. Its totient is φ = 106697808.

The previous prime is 106697791. The next prime is 106697821. The reversal of 106697809 is 908796601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96963409 + 9734400 = 9847^2 + 3120^2 .

It is a cyclic number.

It is not a de Polignac number, because 106697809 - 2⁵ = 106697777 is a prime.

It is a super-2 number, since 2×106697809² = 22768844890800962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106697839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53348904 + 53348905.

It is an arithmetic number, because the mean of its divisors is an integer number (53348905).

Almost surely, 2^106697809 is an apocalyptic number.

It is an amenable number.

106697809 is a deficient number, since it is larger than the sum of its proper divisors (1).

106697809 is an equidigital number, since it uses as much as digits as its factorization.

106697809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 106697809 is about 10329.4631515873. The cubic root of 106697809 is about 474.2985902564.

The spelling of 106697809 in words is "one hundred six million, six hundred ninety-seven thousand, eight hundred nine".