6465565688 has 16 divisors (see below), whose sum is σ = 12134356080. Its totient is φ = 3229737408.

The previous prime is 6465565633. The next prime is 6465565693. The reversal of 6465565688 is 8865655646.

It is a congruent 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, 371645 + ... + 388652.

It is an arithmetic number, because the mean of its divisors is an integer number (758397255).

Almost surely, 2^6465565688 is an apocalyptic number.

It is an amenable number.

6465565688 is a deficient number, since it is larger than the sum of its proper divisors (5668790392).

6465565688 is a wasteful number, since it uses less digits than its factorization.

6465565688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761366 (or 761362 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 59.

The square root of 6465565688 is about 80408.7413656003. The cubic root of 6465565688 is about 1862.9541916380.

The spelling of 6465565688 in words is "six billion, four hundred sixty-five million, five hundred sixty-five thousand, six hundred eighty-eight".