6465688464 has 40 divisors (see below), whose sum is σ = 17091476512. Its totient is φ = 2105107200.

The previous prime is 6465688457. The next prime is 6465688501. The reversal of 6465688464 is 4648865646.

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, 1564237 + ... + 1568364.

Almost surely, 2^6465688464 is an apocalyptic number.

It is an amenable number.

6465688464 is an abundant number, since it is smaller than the sum of its proper divisors (10625788048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6465688464 is a wasteful number, since it uses less digits than its factorization.

6465688464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132655 (or 3132649 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 57.

The square root of 6465688464 is about 80409.5048113095. The cubic root of 6465688464 is about 1862.9659835743.

The spelling of 6465688464 in words is "six billion, four hundred sixty-five million, six hundred eighty-eight thousand, four hundred sixty-four".