6465650688 has 432 divisors, whose sum is σ = 22900812480. Its totient is φ = 1783627776.

The previous prime is 6465650651. The next prime is 6465650689. The reversal of 6465650688 is 8860565646.

It is a happy number.

6465650688 is a `hidden beast` number, since 6 + 4 + 6 + 56 + 506 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6465650689) 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, 222953458 + ... + 222953486.

It is an arithmetic number, because the mean of its divisors is an integer number (53011140).

Almost surely, 2^6465650688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6465650688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11450406240).

6465650688 is an abundant number, since it is smaller than the sum of its proper divisors (16435161792).

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

6465650688 is an frugal number, since it uses more digits than its factorization.

6465650688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The square root of 6465650688 is about 80409.2699133626. The cubic root of 6465650688 is about 1862.9623554204.

The spelling of 6465650688 in words is "six billion, four hundred sixty-five million, six hundred fifty thousand, six hundred eighty-eight".