7804433664 has 54 divisors (see below), whose sum is σ = 22502112906. Its totient is φ = 2601477120.

The previous prime is 7804433639. The next prime is 7804433677. The reversal of 7804433664 is 4663344087.

It can be written as a sum of positive squares in only one way, i.e., 4324377600 + 3480056064 = 65760^2 + 58992^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 1691367 + ... + 1695974.

Almost surely, 2^7804433664 is an apocalyptic number.

It is an amenable number.

7804433664 is an abundant number, since it is smaller than the sum of its proper divisors (14697679242).

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

7804433664 is a wasteful number, since it uses less digits than its factorization.

7804433664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387363 (or 3387346 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The square root of 7804433664 is about 88342.7057769910. The cubic root of 7804433664 is about 1983.5681725801.

The spelling of 7804433664 in words is "seven billion, eight hundred four million, four hundred thirty-three thousand, six hundred sixty-four".