865652 has 12 divisors (see below), whose sum is σ = 1556100. Its totient is φ = 421056.

The previous prime is 865643. The next prime is 865661. The reversal of 865652 is 256568.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (865643) and next prime (865661).

It can be written as a sum of positive squares in 2 ways, for example, as 556516 + 309136 = 746^2 + 556^2 .

It is a congruent number.

It is an unprimeable number.

865652 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 in 3 ways as a sum of consecutive naturals, for example, 2777 + ... + 3072.

It is an arithmetic number, because the mean of its divisors is an integer number (129675).

2⁸⁶⁵⁶⁵² is an apocalyptic number.

It is an amenable number.

865652 is a deficient number, since it is larger than the sum of its proper divisors (690448).

865652 is a wasteful number, since it uses less digits than its factorization.

865652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890 (or 5888 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 865652 is about 930.4042132321. The cubic root of 865652 is about 95.3047278622.

The spelling of 865652 in words is "eight hundred sixty-five thousand, six hundred fifty-two".