6465563 has 4 divisors (see below), whose sum is σ = 6962928. Its totient is φ = 5968200.

The previous prime is 6465551. The next prime is 6465581. The reversal of 6465563 is 3655646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6465563 - 2⁶ = 6465499 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 4⁴ + 6⁴ + 5 + 5³ + 6⁸ + 3¹⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6465533) 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, 248663 + ... + 248688.

It is an arithmetic number, because the mean of its divisors is an integer number (1740732).

Almost surely, 2^6465563 is an apocalyptic number.

6465563 is a deficient number, since it is larger than the sum of its proper divisors (497365).

6465563 is a wasteful number, since it uses less digits than its factorization.

6465563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497364.

The product of its digits is 64800, while the sum is 35.

The square root of 6465563 is about 2542.7471364648. The cubic root of 6465563 is about 186.2953933469.

The spelling of 6465563 in words is "six million, four hundred sixty-five thousand, five hundred sixty-three".