84685605 has 32 divisors (see below), whose sum is σ = 138682368. Its totient is φ = 44116800.

The previous prime is 84685577. The next prime is 84685607. The reversal of 84685605 is 50658648.

It is not a de Polignac number, because 84685605 - 2⁹ = 84685093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84685607) by changing a digit.

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, 139212 + ... + 139818.

It is an arithmetic number, because the mean of its divisors is an integer number (4333824).

Almost surely, 2^84685605 is an apocalyptic number.

It is an amenable number.

84685605 is a deficient number, since it is larger than the sum of its proper divisors (53996763).

84685605 is a wasteful number, since it uses less digits than its factorization.

84685605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 84685605 is about 9202.4781988332. The cubic root of 84685605 is about 439.1402028652.

The spelling of 84685605 in words is "eighty-four million, six hundred eighty-five thousand, six hundred five".