7696779840 has 224 divisors, whose sum is σ = 27785324160. Its totient is φ = 2004645888.

The previous prime is 7696779803. The next prime is 7696779889. The reversal of 7696779840 is 489776967.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361162 + ... + 381878.

Almost surely, 2^7696779840 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 7696779840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13892662080).

7696779840 is an abundant number, since it is smaller than the sum of its proper divisors (20088544320).

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

7696779840 is a wasteful number, since it uses less digits than its factorization.

7696779840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20786 (or 20770 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 63.

The square root of 7696779840 is about 87731.2933906710. The cubic root of 7696779840 is about 1974.4055116140.

The spelling of 7696779840 in words is "seven billion, six hundred ninety-six million, seven hundred seventy-nine thousand, eight hundred forty".