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7085 = 513109
BaseRepresentation
bin1101110101101
3100201102
41232231
5211320
652445
726441
oct15655
910642
107085
115361
124125
1332c0
142821
152175
hex1bad

7085 has 8 divisors (see below), whose sum is σ = 9240. Its totient is φ = 5184.

The previous prime is 7079. The next prime is 7103. The reversal of 7085 is 5807.

It can be written as a sum of positive squares in 4 ways, for example, as 361 + 6724 = 19^2 + 82^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7085 - 24 = 7069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11 + ... + 119.

It is an arithmetic number, because the mean of its divisors is an integer number (1155).

27085 is an apocalyptic number.

It is an amenable number.

7085 is a deficient number, since it is larger than the sum of its proper divisors (2155).

7085 is a wasteful number, since it uses less digits than its factorization.

7085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 7085 is about 84.1724420461. The cubic root of 7085 is about 19.2064286922.

The spelling of 7085 in words is "seven thousand, eighty-five".

Divisors: 1 5 13 65 109 545 1417 7085