70589609 has 2 divisors, whose sum is σ = 70589610. Its totient is φ = 70589608.

The previous prime is 70589569. The next prime is 70589653. The reversal of 70589609 is 90698507.

It is an a-pointer prime, because the next prime (70589653) can be obtained adding 70589609 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63043600 + 7546009 = 7940^2 + 2747^2 .

It is a cyclic number.

It is not a de Polignac number, because 70589609 - 2⁸ = 70589353 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70589609.

It is not a weakly prime, because it can be changed into another prime (70589689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35294804 + 35294805.

It is an arithmetic number, because the mean of its divisors is an integer number (35294805).

Almost surely, 2^70589609 is an apocalyptic number.

It is an amenable number.

70589609 is a deficient number, since it is larger than the sum of its proper divisors (1).

70589609 is an equidigital number, since it uses as much as digits as its factorization.

70589609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 70589609 is about 8401.7622556223. The cubic root of 70589609 is about 413.2824138771.

The spelling of 70589609 in words is "seventy million, five hundred eighty-nine thousand, six hundred nine".