70067609 has 2 divisors, whose sum is σ = 70067610. Its totient is φ = 70067608.

The previous prime is 70067587. The next prime is 70067623. The reversal of 70067609 is 90676007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54346384 + 15721225 = 7372^2 + 3965^2 .

It is an emirp because it is prime and its reverse (90676007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70067609 - 2²⁰ = 69019033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70067629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35033804 + 35033805.

It is an arithmetic number, because the mean of its divisors is an integer number (35033805).

Almost surely, 2^70067609 is an apocalyptic number.

It is an amenable number.

70067609 is a deficient number, since it is larger than the sum of its proper divisors (1).

70067609 is an equidigital number, since it uses as much as digits as its factorization.

70067609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 70067609 is about 8370.6397007636. The cubic root of 70067609 is about 412.2611710855.

The spelling of 70067609 in words is "seventy million, sixty-seven thousand, six hundred nine".