8777680 has 20 divisors (see below), whose sum is σ = 20408292. Its totient is φ = 3511040.

The previous prime is 8777669. The next prime is 8777683. The reversal of 8777680 is 867778.

It can be written as a sum of positive squares in 2 ways, for example, as 5494336 + 3283344 = 2344^2 + 1812^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8777683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 54781 + ... + 54940.

Almost surely, 2^8777680 is an apocalyptic number.

8777680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8777680 is an abundant number, since it is smaller than the sum of its proper divisors (11630612).

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

8777680 is a wasteful number, since it uses less digits than its factorization.

8777680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109734 (or 109728 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 8777680 is about 2962.7149711034. The cubic root of 8777680 is about 206.2813261264.

The spelling of 8777680 in words is "eight million, seven hundred seventy-seven thousand, six hundred eighty".