4905605 has 8 divisors (see below), whose sum is σ = 6233112. Its totient is φ = 3693568.

The previous prime is 4905587. The next prime is 4905617. The reversal of 4905605 is 5065094.

It can be written as a sum of positive squares in 4 ways, for example, as 649636 + 4255969 = 806^2 + 2063^2 .

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 4905605 - 2⁶ = 4905541 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28772 + ... + 28941.

It is an arithmetic number, because the mean of its divisors is an integer number (779139).

Almost surely, 2^4905605 is an apocalyptic number.

It is an amenable number.

4905605 is a deficient number, since it is larger than the sum of its proper divisors (1327507).

4905605 is a wasteful number, since it uses less digits than its factorization.

4905605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57735.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 4905605 is about 2214.8600407249. The cubic root of 4905605 is about 169.9146630519.

The spelling of 4905605 in words is "four million, nine hundred five thousand, six hundred five".