863608 has 8 divisors (see below), whose sum is σ = 1619280. Its totient is φ = 431800.

The previous prime is 863593. The next prime is 863609. The reversal of 863608 is 806368.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 863608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863609) 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 as a sum of consecutive naturals, namely, 53968 + ... + 53983.

It is an arithmetic number, because the mean of its divisors is an integer number (202410).

2⁸⁶³⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

863608 is a deficient number, since it is larger than the sum of its proper divisors (755672).

863608 is a wasteful number, since it uses less digits than its factorization.

863608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107957 (or 107953 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 863608 is about 929.3051167405. The cubic root of 863608 is about 95.2296567444.

It can be divided in two parts, 86360 and 8, that added together give a palindrome (86368).

The spelling of 863608 in words is "eight hundred sixty-three thousand, six hundred eight".