6111720 has 64 divisors (see below), whose sum is σ = 20376000. Its totient is φ = 1629504.

The previous prime is 6111713. The next prime is 6111727. The reversal of 6111720 is 271116.

It is an interprime number because it is at equal distance from previous prime (6111713) and next prime (6111727).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 6111693 and 6111702.

It is not an unprimeable number, because it can be changed into a prime (6111727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1750 + ... + 3909.

It is an arithmetic number, because the mean of its divisors is an integer number (318375).

Almost surely, 2^6111720 is an apocalyptic number.

6111720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6111720 is an abundant number, since it is smaller than the sum of its proper divisors (14264280).

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

6111720 is a wasteful number, since it uses less digits than its factorization.

6111720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5679 (or 5669 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 6111720 is about 2472.1893131393. The cubic root of 6111720 is about 182.8329569481.

Adding to 6111720 its reverse (271116), we get a palindrome (6382836).

It can be divided in two parts, 61 and 11720, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 6111720 in words is "six million, one hundred eleven thousand, seven hundred twenty".