9767639868 has 24 divisors (see below), whose sum is σ = 26047039872. Its totient is φ = 2790754224.

The previous prime is 9767639863. The next prime is 9767639881. The reversal of 9767639868 is 8689367679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9767639863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58140630 + ... + 58140797.

It is an arithmetic number, because the mean of its divisors is an integer number (1085293328).

Almost surely, 2^9767639868 is an apocalyptic number.

It is an amenable number.

9767639868 is an abundant number, since it is smaller than the sum of its proper divisors (16279400004).

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

9767639868 is a wasteful number, since it uses less digits than its factorization.

9767639868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116281441 (or 116281439 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 69.

The square root of 9767639868 is about 98831.3708697800. The cubic root of 9767639868 is about 2137.6169259385.

The spelling of 9767639868 in words is "nine billion, seven hundred sixty-seven million, six hundred thirty-nine thousand, eight hundred sixty-eight".