7898806680 has 32 divisors (see below), whose sum is σ = 23696420400. Its totient is φ = 2106348416.

The previous prime is 7898806649. The next prime is 7898806681. The reversal of 7898806680 is 866088987.

It is a super-2 number, since 2×7898806680² (a number of 21 digits) contains 22 as substring.

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 (7898806681) 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, 32911575 + ... + 32911814.

Almost surely, 2^7898806680 is an apocalyptic number.

It is an amenable number.

7898806680 is an abundant number, since it is smaller than the sum of its proper divisors (15797613720).

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

7898806680 is a wasteful number, since it uses less digits than its factorization.

7898806680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65823403 (or 65823399 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 60.

The square root of 7898806680 is about 88875.2309701640. The cubic root of 7898806680 is about 1991.5314154832.

The spelling of 7898806680 in words is "seven billion, eight hundred ninety-eight million, eight hundred six thousand, six hundred eighty".