511620 has 24 divisors (see below), whose sum is σ = 1432704. Its totient is φ = 136416.

The previous prime is 511603. The next prime is 511627. The reversal of 511620 is 26115.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 511620.

It is not an unprimeable number, because it can be changed into a prime (511627) by changing a digit.

511620 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, 4204 + ... + 4323.

It is an arithmetic number, because the mean of its divisors is an integer number (59696).

2⁵¹¹⁶²⁰ is an apocalyptic number.

It is an amenable number.

511620 is an abundant number, since it is smaller than the sum of its proper divisors (921084).

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

511620 is a wasteful number, since it uses less digits than its factorization.

511620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539 (or 8537 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 511620 is about 715.2761704405. The cubic root of 511620 is about 79.9802034349.

Adding to 511620 its reverse (26115), we get a palindrome (537735).

The spelling of 511620 in words is "five hundred eleven thousand, six hundred twenty".