7898966520 has 128 divisors (see below), whose sum is σ = 25552800000. Its totient is φ = 1946833920.

The previous prime is 7898966447. The next prime is 7898966527. The reversal of 7898966520 is 256698987.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7898966527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51231 + ... + 135729.

It is an arithmetic number, because the mean of its divisors is an integer number (199631250).

Almost surely, 2^7898966520 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 7898966520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12776400000).

7898966520 is an abundant number, since it is smaller than the sum of its proper divisors (17653833480).

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

7898966520 is a wasteful number, since it uses less digits than its factorization.

7898966520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84573 (or 84569 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The square root of 7898966520 is about 88876.1302037842. The cubic root of 7898966520 is about 1991.5448489147.

The spelling of 7898966520 in words is "seven billion, eight hundred ninety-eight million, nine hundred sixty-six thousand, five hundred twenty".