6500364665 has 4 divisors (see below), whose sum is σ = 7800437604. Its totient is φ = 5200291728.

The previous prime is 6500364659. The next prime is 6500364671. The reversal of 6500364665 is 5664630056.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (6500364659) and next prime (6500364671).

It can be written as a sum of positive squares in 2 ways, for example, as 894548281 + 5605816384 = 29909^2 + 74872^2 .

It is a cyclic number.

It is not a de Polignac number, because 6500364665 - 2¹⁰ = 6500363641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650036462 + ... + 650036471.

It is an arithmetic number, because the mean of its divisors is an integer number (1950109401).

Almost surely, 2^6500364665 is an apocalyptic number.

It is an amenable number.

6500364665 is a deficient number, since it is larger than the sum of its proper divisors (1300072939).

6500364665 is a wasteful number, since it uses less digits than its factorization.

6500364665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300072938.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 6500364665 is about 80624.8390075912. The cubic root of 6500364665 is about 1866.2904781709.

The spelling of 6500364665 in words is "six billion, five hundred million, three hundred sixty-four thousand, six hundred sixty-five".