591420 has 24 divisors (see below), whose sum is σ = 1656144. Its totient is φ = 157696.

The previous prime is 591407. The next prime is 591421. The reversal of 591420 is 24195.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 591420.

It is not an unprimeable number, because it can be changed into a prime (591421) by changing a digit.

591420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4869 + ... + 4988.

It is an arithmetic number, because the mean of its divisors is an integer number (69006).

2⁵⁹¹⁴²⁰ is an apocalyptic number.

It is an amenable number.

591420 is an abundant number, since it is smaller than the sum of its proper divisors (1064724).

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

591420 is a wasteful number, since it uses less digits than its factorization.

591420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9869 (or 9867 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 591420 is about 769.0383605517. The cubic root of 591420 is about 83.9392985491.

The spelling of 591420 in words is "five hundred ninety-one thousand, four hundred twenty".