7766078684 has 48 divisors (see below), whose sum is σ = 16784257728. Its totient is φ = 3061767168.

The previous prime is 7766078657. The next prime is 7766078729. The reversal of 7766078684 is 4868706677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70244 + ... + 143060.

It is an arithmetic number, because the mean of its divisors is an integer number (349672036).

Almost surely, 2^7766078684 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 7766078684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8392128864).

7766078684 is an abundant number, since it is smaller than the sum of its proper divisors (9018179044).

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

7766078684 is a wasteful number, since it uses less digits than its factorization.

7766078684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73134 (or 73132 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 59.

The square root of 7766078684 is about 88125.3577808340. The cubic root of 7766078684 is about 1980.3134119393.

The spelling of 7766078684 in words is "seven billion, seven hundred sixty-six million, seventy-eight thousand, six hundred eighty-four".