55680705 has 12 divisors (see below), whose sum is σ = 96513300. Its totient is φ = 29696352.

The previous prime is 55680689. The next prime is 55680727. The reversal of 55680705 is 50708655.

55680705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 15116544 + 40564161 = 3888^2 + 6369^2 .

It is not a de Polignac number, because 55680705 - 2⁴ = 55680689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55680705.

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 11 ways as a sum of consecutive naturals, for example, 618630 + ... + 618719.

It is an arithmetic number, because the mean of its divisors is an integer number (8042775).

Almost surely, 2^55680705 is an apocalyptic number.

It is an amenable number.

55680705 is a deficient number, since it is larger than the sum of its proper divisors (40832595).

55680705 is a wasteful number, since it uses less digits than its factorization.

55680705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237360 (or 1237357 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 55680705 is about 7461.9504822801. The cubic root of 55680705 is about 381.8577200089.

The spelling of 55680705 in words is "fifty-five million, six hundred eighty thousand, seven hundred five".