7704221076 has 144 divisors (see below), whose sum is σ = 20369276928. Its totient is φ = 2453371200.

The previous prime is 7704221051. The next prime is 7704221093. The reversal of 7704221076 is 6701224077.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 7704221076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20992245 + ... + 20992611.

It is an arithmetic number, because the mean of its divisors is an integer number (141453312).

Almost surely, 2^7704221076 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 7704221076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10184638464).

7704221076 is an abundant number, since it is smaller than the sum of its proper divisors (12665055852).

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

7704221076 is a wasteful number, since it uses less digits than its factorization.

7704221076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 7704221076 is about 87773.6923912854. The cubic root of 7704221076 is about 1975.0415908349.

The spelling of 7704221076 in words is "seven billion, seven hundred four million, two hundred twenty-one thousand, seventy-six".