865930 has 16 divisors (see below), whose sum is σ = 1678824. Its totient is φ = 319680.

The previous prime is 865889. The next prime is 865933. The reversal of 865930 is 39568.

865930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 741321 + 124609 = 861^2 + 353^2 .

It is a junction number, because it is equal to n+sod(n) for n = 865892 and 865901.

It is not an unprimeable number, because it can be changed into a prime (865933) by changing a digit.

865930 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3201 + ... + 3460.

2⁸⁶⁵⁹³⁰ is an apocalyptic number.

865930 is a deficient number, since it is larger than the sum of its proper divisors (812894).

865930 is a wasteful number, since it uses less digits than its factorization.

865930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 865930 is about 930.5535986712. The cubic root of 865930 is about 95.3149289894.

The spelling of 865930 in words is "eight hundred sixty-five thousand, nine hundred thirty".