7688440650 has 96 divisors (see below), whose sum is σ = 20824667136. Its totient is φ = 1861720000.

The previous prime is 7688440633. The next prime is 7688440657. The reversal of 7688440650 is 560448867.

It is a super-2 number, since 2×7688440650² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7688440650.

It is not an unprimeable number, because it can be changed into a prime (7688440657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1798015 + ... + 1802285.

It is an arithmetic number, because the mean of its divisors is an integer number (216923616).

Almost surely, 2^7688440650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7688440650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10412333568).

7688440650 is an abundant number, since it is smaller than the sum of its proper divisors (13136226486).

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

7688440650 is a wasteful number, since it uses less digits than its factorization.

7688440650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388 (or 5383 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 7688440650 is about 87683.7536263132. The cubic root of 7688440650 is about 1973.6921876431.

The spelling of 7688440650 in words is "seven billion, six hundred eighty-eight million, four hundred forty thousand, six hundred fifty".