6554440 has 16 divisors (see below), whose sum is σ = 14747580. Its totient is φ = 2621760.

The previous prime is 6554437. The next prime is 6554441. The reversal of 6554440 is 444556.

It can be written as a sum of positive squares in 2 ways, for example, as 5597956 + 956484 = 2366^2 + 978^2 .

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6554399 and 6554408.

It is not an unprimeable number, because it can be changed into a prime (6554441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81891 + ... + 81970.

Almost surely, 2^6554440 is an apocalyptic number.

It is an amenable number.

6554440 is an abundant number, since it is smaller than the sum of its proper divisors (8193140).

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

6554440 is a wasteful number, since it uses less digits than its factorization.

6554440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163872 (or 163868 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 6554440 is about 2560.1640572432. The cubic root of 6554440 is about 187.1451302651.

Adding to 6554440 its reverse (444556), we get a palindrome (6998996).

The spelling of 6554440 in words is "six million, five hundred fifty-four thousand, four hundred forty".