7898664960 has 156 divisors (see below), whose sum is σ = 27379334892. Its totient is φ = 2106261504.

The previous prime is 7898664931. The next prime is 7898664989. The reversal of 7898664960 is 694668987.

7898664960 is a `hidden beast` number, since 7 + 89 + 8 + 66 + 496 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (7898664931) and next prime (7898664989).

It can be written as a sum of positive squares in 2 ways, for example, as 6257442816 + 1641222144 = 79104^2 + 40512^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162894 + ... + 205746.

It is an arithmetic number, because the mean of its divisors is an integer number (175508557).

Almost surely, 2^7898664960 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 7898664960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13689667446).

7898664960 is an abundant number, since it is smaller than the sum of its proper divisors (19480669932).

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

7898664960 is a wasteful number, since it uses less digits than its factorization.

7898664960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42888 (or 42863 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The square root of 7898664960 is about 88874.4336690817. The cubic root of 7898664960 is about 1991.5195047592.

The spelling of 7898664960 in words is "seven billion, eight hundred ninety-eight million, six hundred sixty-four thousand, nine hundred sixty".