84081863 has 2 divisors, whose sum is σ = 84081864. Its totient is φ = 84081862.

The previous prime is 84081853. The next prime is 84081883. The reversal of 84081863 is 36818048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84081863 - 2⁶ = 84081799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84081853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42040931 + 42040932.

It is an arithmetic number, because the mean of its divisors is an integer number (42040932).

Almost surely, 2^84081863 is an apocalyptic number.

84081863 is a deficient number, since it is larger than the sum of its proper divisors (1).

84081863 is an equidigital number, since it uses as much as digits as its factorization.

84081863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 84081863 is about 9169.6162951347. The cubic root of 84081863 is about 438.0941378665.

The spelling of 84081863 in words is "eighty-four million, eighty-one thousand, eight hundred sixty-three".