6540413 has 12 divisors (see below), whose sum is σ = 7252224. Its totient is φ = 5893800.

The previous prime is 6540409. The next prime is 6540421. The reversal of 6540413 is 3140456.

It is a happy number.

It is not a de Polignac number, because 6540413 - 2² = 6540409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22970 + ... + 23252.

It is an arithmetic number, because the mean of its divisors is an integer number (604352).

Almost surely, 2^6540413 is an apocalyptic number.

It is an amenable number.

6540413 is a deficient number, since it is larger than the sum of its proper divisors (711811).

6540413 is a wasteful number, since it uses less digits than its factorization.

6540413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 6540413 is about 2557.4231171240. The cubic root of 6540413 is about 187.0115333140.

Adding to 6540413 its reverse (3140456), we get a palindrome (9680869).

The spelling of 6540413 in words is "six million, five hundred forty thousand, four hundred thirteen".