7880685696 has 320 divisors, whose sum is σ = 25710854400. Its totient is φ = 2381322240.

The previous prime is 7880685671. The next prime is 7880685697. The reversal of 7880685696 is 6965860887.

7880685696 is a `hidden beast` number, since 7 + 8 + 8 + 0 + 68 + 569 + 6 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7880685697) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7951761 + ... + 7952751.

It is an arithmetic number, because the mean of its divisors is an integer number (80346420).

Almost surely, 2^7880685696 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 7880685696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12855427200).

7880685696 is an abundant number, since it is smaller than the sum of its proper divisors (17830168704).

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

7880685696 is a wasteful number, since it uses less digits than its factorization.

7880685696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The square root of 7880685696 is about 88773.2262340397. The cubic root of 7880685696 is about 1990.0072974321.

The spelling of 7880685696 in words is "seven billion, eight hundred eighty million, six hundred eighty-five thousand, six hundred ninety-six".