70769161 has 2 divisors, whose sum is σ = 70769162. Its totient is φ = 70769160.

The previous prime is 70769159. The next prime is 70769177. The reversal of 70769161 is 16196707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67963536 + 2805625 = 8244^2 + 1675^2 .

It is an emirp because it is prime and its reverse (16196707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70769161 - 2¹ = 70769159 is a prime.

Together with 70769159, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 70769161.

It is not a weakly prime, because it can be changed into another prime (70769141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35384580 + 35384581.

It is an arithmetic number, because the mean of its divisors is an integer number (35384581).

Almost surely, 2^70769161 is an apocalyptic number.

It is an amenable number.

70769161 is a deficient number, since it is larger than the sum of its proper divisors (1).

70769161 is an equidigital number, since it uses as much as digits as its factorization.

70769161 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 37.

The square root of 70769161 is about 8412.4408467460. The cubic root of 70769161 is about 413.6325261064.

The spelling of 70769161 in words is "seventy million, seven hundred sixty-nine thousand, one hundred sixty-one".