84020711 has 2 divisors, whose sum is σ = 84020712. Its totient is φ = 84020710.

The previous prime is 84020663. The next prime is 84020723. The reversal of 84020711 is 11702048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84020711 - 2¹⁰ = 84019687 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84020731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42010355 + 42010356.

It is an arithmetic number, because the mean of its divisors is an integer number (42010356).

Almost surely, 2^84020711 is an apocalyptic number.

84020711 is a deficient number, since it is larger than the sum of its proper divisors (1).

84020711 is an equidigital number, since it uses as much as digits as its factorization.

84020711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 84020711 is about 9166.2811979559. The cubic root of 84020711 is about 437.9879047694.

Adding to 84020711 its reverse (11702048), we get a palindrome (95722759).

The spelling of 84020711 in words is "eighty-four million, twenty thousand, seven hundred eleven".