84081071 has 2 divisors, whose sum is σ = 84081072. Its totient is φ = 84081070.

The previous prime is 84081013. The next prime is 84081089. The reversal of 84081071 is 17018048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84081071 - 2⁶ = 84081007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84081271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42040535 + 42040536.

It is an arithmetic number, because the mean of its divisors is an integer number (42040536).

Almost surely, 2^84081071 is an apocalyptic number.

84081071 is a deficient number, since it is larger than the sum of its proper divisors (1).

84081071 is an equidigital number, since it uses as much as digits as its factorization.

84081071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 84081071 is about 9169.5731089293. The cubic root of 84081071 is about 438.0927623354.

The spelling of 84081071 in words is "eighty-four million, eighty-one thousand, seventy-one".