6513540 has 96 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 1545600.

The previous prime is 6513497. The next prime is 6513553. The reversal of 6513540 is 453156.

It is a self number, because there is not a number n which added to its sum of digits gives 6513540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46791 + ... + 46929.

It is an arithmetic number, because the mean of its divisors is an integer number (211680).

Almost surely, 2^6513540 is an apocalyptic number.

6513540 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 6513540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10160640).

6513540 is an abundant number, since it is smaller than the sum of its proper divisors (13807740).

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

6513540 is a wasteful number, since it uses less digits than its factorization.

6513540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 6513540 is about 2552.1637878475. The cubic root of 6513540 is about 186.7550530972.

Adding to 6513540 its reverse (453156), we get a palindrome (6966696).

The spelling of 6513540 in words is "six million, five hundred thirteen thousand, five hundred forty".