830681 has 4 divisors (see below), whose sum is σ = 833664. Its totient is φ = 827700.

The previous prime is 830677. The next prime is 830693. The reversal of 830681 is 186038.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 830681 - 2² = 830677 is a prime.

It is a super-3 number, since 3×830681³ = 1719586733342133723, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 830681.

It is not an unprimeable number, because it can be changed into a prime (830981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (208416).

2⁸³⁰⁶⁸¹ is an apocalyptic number.

It is an amenable number.

830681 is a deficient number, since it is larger than the sum of its proper divisors (2983).

830681 is a wasteful number, since it uses less digits than its factorization.

830681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 830681 is about 911.4170285879. The cubic root of 830681 is about 94.0036591302.

The spelling of 830681 in words is "eight hundred thirty thousand, six hundred eighty-one".