693136109 has 2 divisors, whose sum is σ = 693136110. Its totient is φ = 693136108.

The previous prime is 693136097. The next prime is 693136111. The reversal of 693136109 is 901631396.

693136109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559086025 + 134050084 = 23645^2 + 11578^2 .

It is a cyclic number.

It is not a de Polignac number, because 693136109 - 2⁸ = 693135853 is a prime.

It is a Sophie Germain prime.

Together with 693136111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693136709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346568054 + 346568055.

It is an arithmetic number, because the mean of its divisors is an integer number (346568055).

Almost surely, 2^693136109 is an apocalyptic number.

It is an amenable number.

693136109 is a deficient number, since it is larger than the sum of its proper divisors (1).

693136109 is an equidigital number, since it uses as much as digits as its factorization.

693136109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 693136109 is about 26327.4782119367. The cubic root of 693136109 is about 884.9923324902.

The spelling of 693136109 in words is "six hundred ninety-three million, one hundred thirty-six thousand, one hundred nine".