605420 has 12 divisors (see below), whose sum is σ = 1271424. Its totient is φ = 242160.

The previous prime is 605413. The next prime is 605443. The reversal of 605420 is 24506.

605420 = T₁₁₁ + T₁₁₂ + ... + T₁₇₀.

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 3 ways as a sum of consecutive naturals, for example, 15116 + ... + 15155.

It is an arithmetic number, because the mean of its divisors is an integer number (105952).

2⁶⁰⁵⁴²⁰ is an apocalyptic number.

It is an amenable number.

605420 is an abundant number, since it is smaller than the sum of its proper divisors (666004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

605420 is a wasteful number, since it uses less digits than its factorization.

605420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30280 (or 30278 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 605420 is about 778.0873986899. The cubic root of 605420 is about 84.5964725693.

Adding to 605420 its reverse (24506), we get a palindrome (629926).

The spelling of 605420 in words is "six hundred five thousand, four hundred twenty".