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BaseRepresentation
bin1111110000101
3102001212
41332011
5224234
6101205
732345
oct17605
912055
108069
116076
124805
133899
142d25
1525ce
hex1f85

8069 has 2 divisors, whose sum is σ = 8070. Its totient is φ = 8068.

The previous prime is 8059. The next prime is 8081. The reversal of 8069 is 9608.

8069 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

8069 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4225 + 3844 = 65^2 + 62^2 .

It is a cyclic number.

It is not a de Polignac number, because 8069 - 24 = 8053 is a prime.

It is a super-2 number, since 2×80692 = 130217522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 13 and base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4034 + 4035.

It is an arithmetic number, because the mean of its divisors is an integer number (4035).

28069 is an apocalyptic number.

It is an amenable number.

8069 is a deficient number, since it is larger than the sum of its proper divisors (1).

8069 is an equidigital number, since it uses as much as digits as its factorization.

8069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 8069 is about 89.8276126812. The cubic root of 8069 is about 20.0573354751.

The spelling of 8069 in words is "eight thousand, sixty-nine".