863648 has 24 divisors (see below), whose sum is σ = 1721412. Its totient is φ = 426496.

The previous prime is 863641. The next prime is 863671. The reversal of 863648 is 846368.

It can be written as a sum of positive squares in 2 ways, for example, as 753424 + 110224 = 868^2 + 332^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 863648.

It is not an unprimeable number, because it can be changed into a prime (863641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286 + ... + 4482.

2⁸⁶³⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

863648 is a deficient number, since it is larger than the sum of its proper divisors (857764).

863648 is a wasteful number, since it uses less digits than its factorization.

863648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 336 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 863648 is about 929.3266379481. The cubic root of 863648 is about 95.2311269822.

The spelling of 863648 in words is "eight hundred sixty-three thousand, six hundred forty-eight".