6505613 has 4 divisors (see below), whose sum is σ = 6520128. Its totient is φ = 6491100.

The previous prime is 6505607. The next prime is 6505621. The reversal of 6505613 is 3165056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6505613 - 2⁶ = 6505549 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 (6505643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6563 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (1630032).

Almost surely, 2^6505613 is an apocalyptic number.

It is an amenable number.

6505613 is a deficient number, since it is larger than the sum of its proper divisors (14515).

6505613 is a wasteful number, since it uses less digits than its factorization.

6505613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14514.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 6505613 is about 2550.6103191197. The cubic root of 6505613 is about 186.6792618344.

The spelling of 6505613 in words is "six million, five hundred five thousand, six hundred thirteen".