6559140 has 144 divisors (see below), whose sum is σ = 22522752. Its totient is φ = 1419264.

The previous prime is 6559109. The next prime is 6559141. The reversal of 6559140 is 419556.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6559098 and 6559107.

It is not an unprimeable number, because it can be changed into a prime (6559141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67572 + ... + 67668.

It is an arithmetic number, because the mean of its divisors is an integer number (156408).

Almost surely, 2^6559140 is an apocalyptic number.

6559140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6559140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11261376).

6559140 is an abundant number, since it is smaller than the sum of its proper divisors (15963612).

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

6559140 is a wasteful number, since it uses less digits than its factorization.

6559140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 6559140 is about 2561.0818026764. The cubic root of 6559140 is about 187.1898517035.

The spelling of 6559140 in words is "six million, five hundred fifty-nine thousand, one hundred forty".