70069709 has 2 divisors, whose sum is σ = 70069710. Its totient is φ = 70069708.

The previous prime is 70069667. The next prime is 70069717. The reversal of 70069709 is 90796007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48260809 + 21808900 = 6947^2 + 4670^2 .

It is a cyclic number.

It is not a de Polignac number, because 70069709 - 2²⁰ = 69021133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70029709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35034854 + 35034855.

It is an arithmetic number, because the mean of its divisors is an integer number (35034855).

Almost surely, 2^70069709 is an apocalyptic number.

It is an amenable number.

70069709 is a deficient number, since it is larger than the sum of its proper divisors (1).

70069709 is an equidigital number, since it uses as much as digits as its factorization.

70069709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 70069709 is about 8370.7651382654. The cubic root of 70069709 is about 412.2652896781.

The spelling of 70069709 in words is "seventy million, sixty-nine thousand, seven hundred nine".