70617709 has 2 divisors, whose sum is σ = 70617710. Its totient is φ = 70617708.

The previous prime is 70617683. The next prime is 70617733. The reversal of 70617709 is 90771607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38378025 + 32239684 = 6195^2 + 5678^2 .

It is a cyclic number.

It is not a de Polignac number, because 70617709 - 2¹⁹ = 70093421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70617769) 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, 35308854 + 35308855.

It is an arithmetic number, because the mean of its divisors is an integer number (35308855).

Almost surely, 2^70617709 is an apocalyptic number.

It is an amenable number.

70617709 is a deficient number, since it is larger than the sum of its proper divisors (1).

70617709 is an equidigital number, since it uses as much as digits as its factorization.

70617709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 70617709 is about 8403.4343574517. The cubic root of 70617709 is about 413.3372458151.

The spelling of 70617709 in words is "seventy million, six hundred seventeen thousand, seven hundred nine".