9968624650 has 24 divisors (see below), whose sum is σ = 18561433644. Its totient is φ = 3983193600.

The previous prime is 9968624641. The next prime is 9968624663. The reversal of 9968624650 is 564268699.

It is a happy number.

It is a Cunningham number, because it is equal to 99843²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 6181576129 + 3787048521 = 78623^2 + 61539^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9968624591 and 9968624600.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58887 + ... + 152986.

Almost surely, 2^9968624650 is an apocalyptic number.

9968624650 is a deficient number, since it is larger than the sum of its proper divisors (8592808994).

9968624650 is a wasteful number, since it uses less digits than its factorization.

9968624650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212826 (or 212821 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 55.

The square root of 9968624650 is about 99843.0000050079. Note that the first 5 decimals coincide. The cubic root of 9968624650 is about 2152.1791246644.

The spelling of 9968624650 in words is "nine billion, nine hundred sixty-eight million, six hundred twenty-four thousand, six hundred fifty".