6464708216 has 8 divisors (see below), whose sum is σ = 12121327920. Its totient is φ = 3232354104.

The previous prime is 6464708189. The next prime is 6464708221. The reversal of 6464708216 is 6128074646.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404044256 + ... + 404044271.

It is an arithmetic number, because the mean of its divisors is an integer number (1515165990).

Almost surely, 2^6464708216 is an apocalyptic number.

It is an amenable number.

6464708216 is a deficient number, since it is larger than the sum of its proper divisors (5656619704).

6464708216 is a wasteful number, since it uses less digits than its factorization.

6464708216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808088533 (or 808088529 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 6464708216 is about 80403.4092312011. The cubic root of 6464708216 is about 1862.8718321686.

The spelling of 6464708216 in words is "six billion, four hundred sixty-four million, seven hundred eight thousand, two hundred sixteen".