80105616 has 30 divisors (see below), whose sum is σ = 224184870. Its totient is φ = 26701824.

The previous prime is 80105611. The next prime is 80105617. The reversal of 80105616 is 61650108.

It can be written as a sum of positive squares in only one way, i.e., 58982400 + 21123216 = 7680^2 + 4596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80105616.

It is not an unprimeable number, because it can be changed into a prime (80105611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278001 + ... + 278288.

It is an arithmetic number, because the mean of its divisors is an integer number (7472829).

Almost surely, 2^80105616 is an apocalyptic number.

It is an amenable number.

80105616 is an abundant number, since it is smaller than the sum of its proper divisors (144079254).

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

80105616 is a wasteful number, since it uses less digits than its factorization.

80105616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556303 (or 556294 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 80105616 is about 8950.1740765194. The cubic root of 80105616 is about 431.0764736011.

The spelling of 80105616 in words is "eighty million, one hundred five thousand, six hundred sixteen".