6648517765 has 8 divisors (see below), whose sum is σ = 8235583488. Its totient is φ = 5147239440.

The previous prime is 6648517751. The next prime is 6648517781. The reversal of 6648517765 is 5677158466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-6648517765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21446677 + ... + 21446986.

It is an arithmetic number, because the mean of its divisors is an integer number (1029447936).

Almost surely, 2^6648517765 is an apocalyptic number.

It is an amenable number.

6648517765 is a deficient number, since it is larger than the sum of its proper divisors (1587065723).

6648517765 is a wasteful number, since it uses less digits than its factorization.

6648517765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42893699.

The product of its digits is 8467200, while the sum is 55.

The square root of 6648517765 is about 81538.4434791344. The cubic root of 6648517765 is about 1880.3626285739.

The spelling of 6648517765 in words is "six billion, six hundred forty-eight million, five hundred seventeen thousand, seven hundred sixty-five".