6411620 has 24 divisors (see below), whose sum is σ = 13588344. Its totient is φ = 2541056.

The previous prime is 6411593. The next prime is 6411661. The reversal of 6411620 is 261146.

It is a happy number.

6411620 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 574564 + 5837056 = 758^2 + 2416^2 .

It is a super-2 number, since 2×6411620² = 82217742048800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 6411592 and 6411601.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 842 + ... + 3678.

It is an arithmetic number, because the mean of its divisors is an integer number (566181).

Almost surely, 2^6411620 is an apocalyptic number.

It is an amenable number.

6411620 is an abundant number, since it is smaller than the sum of its proper divisors (7176724).

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

6411620 is a wasteful number, since it uses less digits than its factorization.

6411620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959 (or 2957 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 6411620 is about 2532.1176907877. The cubic root of 6411620 is about 185.7758505384.

Adding to 6411620 its reverse (261146), we get a palindrome (6672766).

The spelling of 6411620 in words is "six million, four hundred eleven thousand, six hundred twenty".