9997594266 has 48 divisors (see below), whose sum is σ = 22191728832. Its totient is φ = 3000138240.

The previous prime is 9997594261. The next prime is 9997594273. The reversal of 9997594266 is 6624957999.

It is a happy number.

It is a super-2 number, since 2×9997594266² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 9997594197 and 9997594206.

It is not an unprimeable number, because it can be changed into a prime (9997594261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7930 + ... + 141626.

It is an arithmetic number, because the mean of its divisors is an integer number (462327684).

Almost surely, 2^9997594266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9997594266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11095864416).

9997594266 is an abundant number, since it is smaller than the sum of its proper divisors (12194134566).

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

9997594266 is a wasteful number, since it uses less digits than its factorization.

9997594266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133827 (or 133816 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 66.

The square root of 9997594266 is about 99987.9706064685. The cubic root of 9997594266 is about 2154.2619096162.

The spelling of 9997594266 in words is "nine billion, nine hundred ninety-seven million, five hundred ninety-four thousand, two hundred sixty-six".