6403323065 has 4 divisors (see below), whose sum is σ = 7683987684. Its totient is φ = 5122658448.

The previous prime is 6403323061. The next prime is 6403323089. The reversal of 6403323065 is 5603233046.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4185572416 + 2217750649 = 64696^2 + 47093^2 .

It is a cyclic number.

It is not a de Polignac number, because 6403323065 - 2² = 6403323061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6403323061) 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, 640332302 + ... + 640332311.

It is an arithmetic number, because the mean of its divisors is an integer number (1920996921).

Almost surely, 2^6403323065 is an apocalyptic number.

It is an amenable number.

6403323065 is a deficient number, since it is larger than the sum of its proper divisors (1280664619).

6403323065 is a wasteful number, since it uses less digits than its factorization.

6403323065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280664618.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 6403323065 is about 80020.7664609631. The cubic root of 6403323065 is about 1856.9568174573.

The spelling of 6403323065 in words is "six billion, four hundred three million, three hundred twenty-three thousand, sixty-five".