84145566 has 32 divisors (see below), whose sum is σ = 179303040. Its totient is φ = 26249184.

The previous prime is 84145543. The next prime is 84145577. The reversal of 84145566 is 66554148.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5016 + ... + 13908.

It is an arithmetic number, because the mean of its divisors is an integer number (5603220).

Almost surely, 2^84145566 is an apocalyptic number.

84145566 is an abundant number, since it is smaller than the sum of its proper divisors (95157474).

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

84145566 is a wasteful number, since it uses less digits than its factorization.

84145566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000.

The product of its digits is 115200, while the sum is 39.

The square root of 84145566 is about 9173.0892288258. The cubic root of 84145566 is about 438.2047477922.

The spelling of 84145566 in words is "eighty-four million, one hundred forty-five thousand, five hundred sixty-six".