9987764596 has 6 divisors (see below), whose sum is σ = 17478588050. Its totient is φ = 4993882296.

The previous prime is 9987764569. The next prime is 9987764603. The reversal of 9987764596 is 6954677899.

It can be written as a sum of positive squares in only one way, i.e., 9542554596 + 445210000 = 97686^2 + 21100^2 .

It is a super-2 number, since 2×9987764596² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248470571 + ... + 1248470578.

Almost surely, 2^9987764596 is an apocalyptic number.

It is an amenable number.

9987764596 is a deficient number, since it is larger than the sum of its proper divisors (7490823454).

9987764596 is a wasteful number, since it uses less digits than its factorization.

9987764596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496941153 (or 2496941151 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 70.

The square root of 9987764596 is about 99938.8042554042. The cubic root of 9987764596 is about 2153.5556521274. Note that the first 3 decimals are identical.

The spelling of 9987764596 in words is "nine billion, nine hundred eighty-seven million, seven hundred sixty-four thousand, five hundred ninety-six".