70806269 has 2 divisors, whose sum is σ = 70806270. Its totient is φ = 70806268.

The previous prime is 70806257. The next prime is 70806283. The reversal of 70806269 is 96260807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42055225 + 28751044 = 6485^2 + 5362^2 .

It is an emirp because it is prime and its reverse (96260807) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70806269 is a prime.

It is a super-2 number, since 2×70806269² = 10027055459400722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70806289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35403134 + 35403135.

It is an arithmetic number, because the mean of its divisors is an integer number (35403135).

Almost surely, 2^70806269 is an apocalyptic number.

It is an amenable number.

70806269 is a deficient number, since it is larger than the sum of its proper divisors (1).

70806269 is an equidigital number, since it uses as much as digits as its factorization.

70806269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 70806269 is about 8414.6461006985. The cubic root of 70806269 is about 413.7048099165.

The spelling of 70806269 in words is "seventy million, eight hundred six thousand, two hundred sixty-nine".