84080666 has 8 divisors (see below), whose sum is σ = 126214740. Its totient is φ = 42009088.

The previous prime is 84080653. The next prime is 84080669. The reversal of 84080666 is 66608048.

It can be written as a sum of positive squares in 2 ways, for example, as 55190041 + 28890625 = 7429^2 + 5375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×84080666³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84080669) 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 3 ways as a sum of consecutive naturals, for example, 12101 + ... + 17736.

Almost surely, 2^84080666 is an apocalyptic number.

84080666 is a deficient number, since it is larger than the sum of its proper divisors (42134074).

84080666 is a wasteful number, since it uses less digits than its factorization.

84080666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31248.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 84080666 is about 9169.5510249957. The cubic root of 84080666 is about 438.0920589355.

The spelling of 84080666 in words is "eighty-four million, eighty thousand, six hundred sixty-six".