511660 has 12 divisors (see below), whose sum is σ = 1074528. Its totient is φ = 204656.

The previous prime is 511633. The next prime is 511669. The reversal of 511660 is 66115.

It is not an unprimeable number, because it can be changed into a prime (511669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12772 + ... + 12811.

It is an arithmetic number, because the mean of its divisors is an integer number (89544).

2⁵¹¹⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

511660 is an abundant number, since it is smaller than the sum of its proper divisors (562868).

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

511660 is a wasteful number, since it uses less digits than its factorization.

511660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25592 (or 25590 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 511660 is about 715.3041311219. The cubic root of 511660 is about 79.9822877454.

Adding to 511660 its reverse (66115), we get a palindrome (577775).

It can be divided in two parts, 51 and 1660, that added together give a triangular number (1711 = T₅₈).

The spelling of 511660 in words is "five hundred eleven thousand, six hundred sixty".