9619666056 has 256 divisors, whose sum is σ = 35878348800. Its totient is φ = 2306361600.

The previous prime is 9619666039. The next prime is 9619666057. The reversal of 9619666056 is 6506669169.

It is a happy number.

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 = 9619665993 and 9619666011.

It is not an unprimeable number, because it can be changed into a prime (9619666057) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 193971 + ... + 238461.

It is an arithmetic number, because the mean of its divisors is an integer number (140149800).

Almost surely, 2^9619666056 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 9619666056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17939174400).

9619666056 is an abundant number, since it is smaller than the sum of its proper divisors (26258682744).

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

9619666056 is a wasteful number, since it uses less digits than its factorization.

9619666056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44537 (or 44527 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The square root of 9619666056 is about 98079.8962886890. The cubic root of 9619666056 is about 2126.7674195291.

The spelling of 9619666056 in words is "nine billion, six hundred nineteen million, six hundred sixty-six thousand, fifty-six".