9987764604 has 48 divisors (see below), whose sum is σ = 24129705600. Its totient is φ = 3211612096.

The previous prime is 9987764603. The next prime is 9987764609. The reversal of 9987764604 is 4064677899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987764603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400987 + ... + 425165.

It is an arithmetic number, because the mean of its divisors is an integer number (502702200).

Almost surely, 2^9987764604 is an apocalyptic number.

It is an amenable number.

9987764604 is an abundant number, since it is smaller than the sum of its proper divisors (14141940996).

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

9987764604 is a wasteful number, since it uses less digits than its factorization.

9987764604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25402 (or 25400 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 60.

The square root of 9987764604 is about 99938.8042954287. The cubic root of 9987764604 is about 2153.5556527024. Note that the first 3 decimals are identical.

The spelling of 9987764604 in words is "nine billion, nine hundred eighty-seven million, seven hundred sixty-four thousand, six hundred four".