70442689 has 2 divisors, whose sum is σ = 70442690. Its totient is φ = 70442688.

The previous prime is 70442683. The next prime is 70442719. The reversal of 70442689 is 98624407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63473089 + 6969600 = 7967^2 + 2640^2 .

It is a cyclic number.

It is not a de Polignac number, because 70442689 - 2¹¹ = 70440641 is a prime.

It is not a weakly prime, because it can be changed into another prime (70442683) 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, 35221344 + 35221345.

It is an arithmetic number, because the mean of its divisors is an integer number (35221345).

Almost surely, 2^70442689 is an apocalyptic number.

It is an amenable number.

70442689 is a deficient number, since it is larger than the sum of its proper divisors (1).

70442689 is an equidigital number, since it uses as much as digits as its factorization.

70442689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 70442689 is about 8393.0142976168. The cubic root of 70442689 is about 412.9954895571.

The spelling of 70442689 in words is "seventy million, four hundred forty-two thousand, six hundred eighty-nine".