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85665 = 355711
BaseRepresentation
bin10100111010100001
311100111210
4110322201
510220130
61500333
7504516
oct247241
9140453
1085665
11593a8
12416a9
132ccb8
142330d
151a5b0
hex14ea1

85665 has 8 divisors (see below), whose sum is σ = 137088. Its totient is φ = 45680.

The previous prime is 85661. The next prime is 85667. The reversal of 85665 is 56658.

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

It is not a de Polignac number, because 85665 - 22 = 85661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2841 + ... + 2870.

It is an arithmetic number, because the mean of its divisors is an integer number (17136).

285665 is an apocalyptic number.

It is an amenable number.

85665 is a deficient number, since it is larger than the sum of its proper divisors (51423).

85665 is a wasteful number, since it uses less digits than its factorization.

85665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719.

The product of its digits is 7200, while the sum is 30.

The square root of 85665 is about 292.6858384002. The cubic root of 85665 is about 44.0826614138.

The spelling of 85665 in words is "eighty-five thousand, six hundred sixty-five".

Divisors: 1 3 5 15 5711 17133 28555 85665