84061985 has 32 divisors (see below), whose sum is σ = 122895360. Its totient is φ = 53915328.

The previous prime is 84061979. The next prime is 84062003. The reversal of 84061985 is 58916048.

It is a cyclic number.

It is not a de Polignac number, because 84061985 - 2¹² = 84057889 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54434 + ... + 55956.

It is an arithmetic number, because the mean of its divisors is an integer number (3840480).

Almost surely, 2^84061985 is an apocalyptic number.

It is an amenable number.

84061985 is a deficient number, since it is larger than the sum of its proper divisors (38833375).

84061985 is a wasteful number, since it uses less digits than its factorization.

84061985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 84061985 is about 9168.5323252961. The cubic root of 84061985 is about 438.0596115080.

The spelling of 84061985 in words is "eighty-four million, sixty-one thousand, nine hundred eighty-five".