6463036665 has 24 divisors (see below), whose sum is σ = 11277793800. Its totient is φ = 3423815424.

The previous prime is 6463036627. The next prime is 6463036669. The reversal of 6463036665 is 5666303646.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29713401 + 6433323264 = 5451^2 + 80208^2 .

It is not a de Polignac number, because 6463036665 - 2⁷ = 6463036537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6463036665.

It is not an unprimeable number, because it can be changed into a prime (6463036669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475252 + ... + 488661.

It is an arithmetic number, because the mean of its divisors is an integer number (469908075).

Almost surely, 2^6463036665 is an apocalyptic number.

It is an amenable number.

6463036665 is a deficient number, since it is larger than the sum of its proper divisors (4814757135).

6463036665 is a wasteful number, since it uses less digits than its factorization.

6463036665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964073 (or 964070 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 45.

The square root of 6463036665 is about 80393.0137822933. The cubic root of 6463036665 is about 1862.7112601526.

The spelling of 6463036665 in words is "six billion, four hundred sixty-three million, thirty-six thousand, six hundred sixty-five".