84071066 has 4 divisors (see below), whose sum is σ = 126106602. Its totient is φ = 42035532.

The previous prime is 84071059. The next prime is 84071081. The reversal of 84071066 is 66017048.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48011041 + 36060025 = 6929^2 + 6005^2 .

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 as a sum of consecutive naturals, namely, 21017765 + ... + 21017768.

Almost surely, 2^84071066 is an apocalyptic number.

84071066 is a deficient number, since it is larger than the sum of its proper divisors (42035536).

84071066 is a wasteful number, since it uses less digits than its factorization.

84071066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42035535.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 84071066 is about 9169.0275384034. The cubic root of 84071066 is about 438.0753850911.

The spelling of 84071066 in words is "eighty-four million, seventy-one thousand, sixty-six".