605894689 has 4 divisors (see below), whose sum is σ = 612141124. Its totient is φ = 599648256.

The previous prime is 605894683. The next prime is 605894699. The reversal of 605894689 is 986498506.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 350438400 + 255456289 = 18720^2 + 15983^2 .

It is a cyclic number.

It is not a de Polignac number, because 605894689 - 2⁷ = 605894561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605894683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3123072 + ... + 3123265.

It is an arithmetic number, because the mean of its divisors is an integer number (153035281).

Almost surely, 2^605894689 is an apocalyptic number.

It is an amenable number.

605894689 is a deficient number, since it is larger than the sum of its proper divisors (6246435).

605894689 is an equidigital number, since it uses as much as digits as its factorization.

605894689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6246434.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The square root of 605894689 is about 24614.9281737729. The cubic root of 605894689 is about 846.1857652153.

The spelling of 605894689 in words is "six hundred five million, eight hundred ninety-four thousand, six hundred eighty-nine".