70144169 has 2 divisors, whose sum is σ = 70144170. Its totient is φ = 70144168.

The previous prime is 70144157. The next prime is 70144187. The reversal of 70144169 is 96144107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51308569 + 18835600 = 7163^2 + 4340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70144169 is a prime.

It is a super-2 number, since 2×70144169² = 9840408889401122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70144369) 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, 35072084 + 35072085.

It is an arithmetic number, because the mean of its divisors is an integer number (35072085).

Almost surely, 2^70144169 is an apocalyptic number.

It is an amenable number.

70144169 is a deficient number, since it is larger than the sum of its proper divisors (1).

70144169 is an equidigital number, since it uses as much as digits as its factorization.

70144169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 70144169 is about 8375.2115794170. The cubic root of 70144169 is about 412.4112700491.

The spelling of 70144169 in words is "seventy million, one hundred forty-four thousand, one hundred sixty-nine".