865532 has 12 divisors (see below), whose sum is σ = 1525776. Its totient is φ = 429600.

The previous prime is 865511. The next prime is 865537. The reversal of 865532 is 235568.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 865495 and 865504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865537) by changing a digit.

865532 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113 + ... + 1320.

It is an arithmetic number, because the mean of its divisors is an integer number (127148).

2⁸⁶⁵⁵³² is an apocalyptic number.

It is an amenable number.

865532 is a deficient number, since it is larger than the sum of its proper divisors (660244).

865532 is a wasteful number, since it uses less digits than its factorization.

865532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588 (or 1586 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 865532 is about 930.3397228970. The cubic root of 865532 is about 95.3003238230.

The spelling of 865532 in words is "eight hundred sixty-five thousand, five hundred thirty-two".