611240 has 64 divisors (see below), whose sum is σ = 1641600. Its totient is φ = 200448.

The previous prime is 611213. The next prime is 611257. The reversal of 611240 is 42116.

It is a super-2 number, since 2×611240² = 747228675200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a plaindrome in base 12.

It is an unprimeable number.

611240 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 15 ways as a sum of consecutive naturals, for example, 10331 + ... + 10389.

It is an arithmetic number, because the mean of its divisors is an integer number (25650).

2⁶¹¹²⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820800).

611240 is an abundant number, since it is smaller than the sum of its proper divisors (1030360).

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

611240 is a wasteful number, since it uses less digits than its factorization.

611240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 611240 is about 781.8183932346. The cubic root of 611240 is about 84.8666883743.

611240 divided by its sum of digits (14) gives a triangular number (43660 = T₂₉₅).

Adding to 611240 its reverse (42116), we get a palindrome (653356).

The spelling of 611240 in words is "six hundred eleven thousand, two hundred forty".