70736129 has 2 divisors, whose sum is σ = 70736130. Its totient is φ = 70736128.

The previous prime is 70736123. The next prime is 70736137. The reversal of 70736129 is 92163707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68095504 + 2640625 = 8252^2 + 1625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70736129 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (70736123) 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, 35368064 + 35368065.

It is an arithmetic number, because the mean of its divisors is an integer number (35368065).

Almost surely, 2^70736129 is an apocalyptic number.

It is an amenable number.

70736129 is a deficient number, since it is larger than the sum of its proper divisors (1).

70736129 is an equidigital number, since it uses as much as digits as its factorization.

70736129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 70736129 is about 8410.4773348485. The cubic root of 70736129 is about 413.5681608012.

The spelling of 70736129 in words is "seventy million, seven hundred thirty-six thousand, one hundred twenty-nine".