84020773 has 2 divisors, whose sum is σ = 84020774. Its totient is φ = 84020772.

The previous prime is 84020731. The next prime is 84020777. The reversal of 84020773 is 37702048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65642404 + 18378369 = 8102^2 + 4287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84020773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84020777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42010386 + 42010387.

It is an arithmetic number, because the mean of its divisors is an integer number (42010387).

Almost surely, 2^84020773 is an apocalyptic number.

It is an amenable number.

84020773 is a deficient number, since it is larger than the sum of its proper divisors (1).

84020773 is an equidigital number, since it uses as much as digits as its factorization.

84020773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 84020773 is about 9166.2845799157. The cubic root of 84020773 is about 437.9880125018.

The spelling of 84020773 in words is "eighty-four million, twenty thousand, seven hundred seventy-three".