7888416660 has 144 divisors (see below), whose sum is σ = 25165026432. Its totient is φ = 2073859200.

The previous prime is 7888416577. The next prime is 7888416749. The reversal of 7888416660 is 666148887.

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

It is a junction number, because it is equal to n+sod(n) for n = 7888416597 and 7888416606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 333630 + ... + 356490.

It is an arithmetic number, because the mean of its divisors is an integer number (174757128).

Almost surely, 2^7888416660 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 7888416660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12582513216).

7888416660 is an abundant number, since it is smaller than the sum of its proper divisors (17276609772).

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

7888416660 is a wasteful number, since it uses less digits than its factorization.

7888416660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22956 (or 22942 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 7888416660 is about 88816.7588915515. The cubic root of 7888416660 is about 1990.6578180980.

The spelling of 7888416660 in words is "seven billion, eight hundred eighty-eight million, four hundred sixteen thousand, six hundred sixty".