69130729 has 2 divisors, whose sum is σ = 69130730. Its totient is φ = 69130728.

The previous prime is 69130727. The next prime is 69130739. The reversal of 69130729 is 92703196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40615129 + 28515600 = 6373^2 + 5340^2 .

It is a cyclic number.

It is not a de Polignac number, because 69130729 - 2¹ = 69130727 is a prime.

Together with 69130727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (69130723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34565364 + 34565365.

It is an arithmetic number, because the mean of its divisors is an integer number (34565365).

Almost surely, 2^69130729 is an apocalyptic number.

It is an amenable number.

69130729 is a deficient number, since it is larger than the sum of its proper divisors (1).

69130729 is an equidigital number, since it uses as much as digits as its factorization.

69130729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 69130729 is about 8314.4891003597. The cubic root of 69130729 is about 410.4154602843.

The spelling of 69130729 in words is "sixty-nine million, one hundred thirty thousand, seven hundred twenty-nine".