863807 has 4 divisors (see below), whose sum is σ = 987216. Its totient is φ = 740400.

The previous prime is 863803. The next prime is 863833. The reversal of 863807 is 708368.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 863807 - 2² = 863803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 863807.

It is not an unprimeable number, because it can be changed into a prime (863801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61694 + ... + 61707.

It is an arithmetic number, because the mean of its divisors is an integer number (246804).

2⁸⁶³⁸⁰⁷ is an apocalyptic number.

863807 is a deficient number, since it is larger than the sum of its proper divisors (123409).

863807 is a wasteful number, since it uses less digits than its factorization.

863807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123408.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 863807 is about 929.4121798212. The cubic root of 863807 is about 95.2369707288.

The spelling of 863807 in words is "eight hundred sixty-three thousand, eight hundred seven".