6650863465 has 4 divisors (see below), whose sum is σ = 7981036164. Its totient is φ = 5320690768.

The previous prime is 6650863463. The next prime is 6650863477. The reversal of 6650863465 is 5643680566.

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 4251431209 + 2399432256 = 65203^2 + 48984^2 .

It is a cyclic number.

It is not a de Polignac number, because 6650863465 - 2¹ = 6650863463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650863463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665086342 + ... + 665086351.

It is an arithmetic number, because the mean of its divisors is an integer number (1995259041).

Almost surely, 2^6650863465 is an apocalyptic number.

It is an amenable number.

6650863465 is a deficient number, since it is larger than the sum of its proper divisors (1330172699).

6650863465 is a wasteful number, since it uses less digits than its factorization.

6650863465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330172698.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The square root of 6650863465 is about 81552.8262232524. The cubic root of 6650863465 is about 1880.5837429209.

The spelling of 6650863465 in words is "six billion, six hundred fifty million, eight hundred sixty-three thousand, four hundred sixty-five".