605305405 has 8 divisors (see below), whose sum is σ = 732795192. Its totient is φ = 479958528.

The previous prime is 605305397. The next prime is 605305457. The reversal of 605305405 is 504503506.

It can be written as a sum of positive squares in 4 ways, for example, as 2013561 + 603291844 = 1419^2 + 24562^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 605305405 - 2³ = 605305397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 535104 + ... + 536233.

It is an arithmetic number, because the mean of its divisors is an integer number (91599399).

Almost surely, 2^605305405 is an apocalyptic number.

It is an amenable number.

605305405 is a deficient number, since it is larger than the sum of its proper divisors (127489787).

605305405 is a wasteful number, since it uses less digits than its factorization.

605305405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071455.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 605305405 is about 24602.9552086736. The cubic root of 605305405 is about 845.9113470770.

The spelling of 605305405 in words is "six hundred five million, three hundred five thousand, four hundred five".