863602 has 4 divisors (see below), whose sum is σ = 1295406. Its totient is φ = 431800.

The previous prime is 863593. The next prime is 863609. The reversal of 863602 is 206368.

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

It can be written as a sum of positive squares in only one way, i.e., 622521 + 241081 = 789^2 + 491^2 .

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (863609) by changing a digit.

863602 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 as a sum of consecutive naturals, namely, 215899 + ... + 215902.

2⁸⁶³⁶⁰² is an apocalyptic number.

863602 is a deficient number, since it is larger than the sum of its proper divisors (431804).

863602 is a wasteful number, since it uses less digits than its factorization.

863602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431803.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 863602 is about 929.3018885163. The cubic root of 863602 is about 95.2294362048.

The spelling of 863602 in words is "eight hundred sixty-three thousand, six hundred two".