84286665 has 36 divisors (see below), whose sum is σ = 149721156. Its totient is φ = 43864128.

The previous prime is 84286661. The next prime is 84286667. The reversal of 84286665 is 56668248.

It can be written as a sum of positive squares in 2 ways, for example, as 9585216 + 74701449 = 3096^2 + 8643^2 .

It is not a de Polignac number, because 84286665 - 2² = 84286661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 84286665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84286661) 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 35 ways as a sum of consecutive naturals, for example, 82699 + ... + 83711.

It is an arithmetic number, because the mean of its divisors is an integer number (4158921).

Almost surely, 2^84286665 is an apocalyptic number.

It is an amenable number.

84286665 is a deficient number, since it is larger than the sum of its proper divisors (65434491).

84286665 is a wasteful number, since it uses less digits than its factorization.

84286665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110 (or 1064 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 84286665 is about 9180.7769279076. The cubic root of 84286665 is about 438.4495447035.

The spelling of 84286665 in words is "eighty-four million, two hundred eighty-six thousand, six hundred sixty-five".