85730 has 8 divisors (see below), whose sum is σ = 154332. Its totient is φ = 34288.

The previous prime is 85717. The next prime is 85733. The reversal of 85730 is 3758.

It can be written as a sum of positive squares in 2 ways, for example, as 83521 + 2209 = 289^2 + 47^2 .

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

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 85696 and 85705.

It is not an unprimeable number, because it can be changed into a prime (85733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4277 + ... + 4296.

2⁸⁵⁷³⁰ is an apocalyptic number.

85730 is a deficient number, since it is larger than the sum of its proper divisors (68602).

85730 is a wasteful number, since it uses less digits than its factorization.

85730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8580.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 85730 is about 292.7968579066. The cubic root of 85730 is about 44.0938081231.

The spelling of 85730 in words is "eighty-five thousand, seven hundred thirty".