868562 has 6 divisors (see below), whose sum is σ = 1304823.
Its totient is φ = 433622.
The previous prime is 868561. The next prime is 868577. The reversal of 868562 is 265868.
It can be written as a sum of positive squares in only one way, i.e., 434281 + 434281 = 659^2 + 659^2
It is an ABA number since it can be written as A⋅BA, here for A=2, B=659.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (868561) by changing a digit.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 989 + ... + 1647.
2868562 is an apocalyptic number.
868562 is a deficient number, since it is larger than the sum of its proper divisors (436261).
868562 is an frugal number, since it uses more digits than its factorization.
868562 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1320 (or 661 counting only the distinct ones).
The product of its digits is 23040, while the sum is 35.
The square root of 868562 is about 931.9667376039.
The cubic root of 868562 is about 95.4114014329.
The spelling of 868562 in words is "eight hundred sixty-eight thousand, five hundred sixty-two".