863830 has 16 divisors (see below), whose sum is σ = 1696464. Its totient is φ = 314080.

The previous prime is 863803. The next prime is 863833. The reversal of 863830 is 38368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863833) by changing a digit.

863830 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 3817 + ... + 4036.

It is an arithmetic number, because the mean of its divisors is an integer number (106029).

2⁸⁶³⁸³⁰ is an apocalyptic number.

863830 is a deficient number, since it is larger than the sum of its proper divisors (832634).

863830 is a wasteful number, since it uses less digits than its factorization.

863830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 863830 is about 929.4245531510. The cubic root of 863830 is about 95.2378159912.

It can be divided in two parts, 8638 and 30, that added together give a palindrome (8668).

The spelling of 863830 in words is "eight hundred sixty-three thousand, eight hundred thirty".