1085720071 has 2 divisors, whose sum is σ = 1085720072. Its totient is φ = 1085720070.

The previous prime is 1085720063. The next prime is 1085720087. The reversal of 1085720071 is 1700275801.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1085720071 - 2³ = 1085720063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085720371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542860035 + 542860036.

It is an arithmetic number, because the mean of its divisors is an integer number (542860036).

Almost surely, 2^1085720071 is an apocalyptic number.

1085720071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085720071 is an equidigital number, since it uses as much as digits as its factorization.

1085720071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 1085720071 is about 32950.2666301807. The cubic root of 1085720071 is about 1027.7937098995.

Adding to 1085720071 its reverse (1700275801), we get a palindrome (2785995872).

The spelling of 1085720071 in words is "one billion, eighty-five million, seven hundred twenty thousand, seventy-one".