106691969 has 2 divisors, whose sum is σ = 106691970. Its totient is φ = 106691968.

The previous prime is 106691953. The next prime is 106692013. The reversal of 106691969 is 969196601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99600400 + 7091569 = 9980^2 + 2663^2 .

It is a cyclic number.

It is not a de Polignac number, because 106691969 - 2⁴ = 106691953 is a prime.

It is a super-2 number, since 2×106691969² = 22766352498193922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (106691929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53345984 + 53345985.

It is an arithmetic number, because the mean of its divisors is an integer number (53345985).

Almost surely, 2^106691969 is an apocalyptic number.

It is an amenable number.

106691969 is a deficient number, since it is larger than the sum of its proper divisors (1).

106691969 is an equidigital number, since it uses as much as digits as its factorization.

106691969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 106691969 is about 10329.1804611983. The cubic root of 106691969 is about 474.2899366757.

The spelling of 106691969 in words is "one hundred six million, six hundred ninety-one thousand, nine hundred sixty-nine".