7647325664 has 48 divisors (see below), whose sum is σ = 16507892016. Its totient is φ = 3458380800.

The previous prime is 7647325643. The next prime is 7647325687. The reversal of 7647325664 is 4665237467.

It is a super-2 number, since 2×7647325664² (a number of 21 digits) contains 22 as substring.

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, 14204 + ... + 124484.

It is an arithmetic number, because the mean of its divisors is an integer number (343914417).

Almost surely, 2^7647325664 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 7647325664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8253946008).

7647325664 is an abundant number, since it is smaller than the sum of its proper divisors (8860566352).

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

7647325664 is a wasteful number, since it uses less digits than its factorization.

7647325664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110499 (or 110491 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 50.

The square root of 7647325664 is about 87448.9889249727. The cubic root of 7647325664 is about 1970.1677014596.

The spelling of 7647325664 in words is "seven billion, six hundred forty-seven million, three hundred twenty-five thousand, six hundred sixty-four".