80655568 has 30 divisors (see below), whose sum is σ = 181785426. Its totient is φ = 34566336.

The previous prime is 80655563. The next prime is 80655571. The reversal of 80655568 is 86555608.

It can be written as a sum of positive squares in only one way, i.e., 74857104 + 5798464 = 8652^2 + 2408^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80655563) 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 5 ways as a sum of consecutive naturals, for example, 50655 + ... + 52222.

Almost surely, 2^80655568 is an apocalyptic number.

It is an amenable number.

80655568 is an abundant number, since it is smaller than the sum of its proper divisors (101129858).

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

80655568 is a wasteful number, since it uses less digits than its factorization.

80655568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102899 (or 102886 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 43.

The square root of 80655568 is about 8980.8445037201. The cubic root of 80655568 is about 432.0607196316.

The spelling of 80655568 in words is "eighty million, six hundred fifty-five thousand, five hundred sixty-eight".