611020 has 24 divisors (see below), whose sum is σ = 1298304. Its totient is φ = 241536.

The previous prime is 611011. The next prime is 611027. The reversal of 611020 is 20116.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 610988 and 611006.

It is not an unprimeable number, because it can be changed into a prime (611027) by changing a digit.

611020 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, 2629 + ... + 2851.

It is an arithmetic number, because the mean of its divisors is an integer number (54096).

2⁶¹¹⁰²⁰ is an apocalyptic number.

It is an amenable number.

611020 is an abundant number, since it is smaller than the sum of its proper divisors (687284).

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

611020 is a wasteful number, since it uses less digits than its factorization.

611020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 611020 is about 781.6776829359. The cubic root of 611020 is about 84.8565052973.

Adding to 611020 its reverse (20116), we get a palindrome (631136).

It can be divided in two parts, 61 and 1020, that added together give a triangular number (1081 = T₄₆).

The spelling of 611020 in words is "six hundred eleven thousand, twenty".