865150 has 48 divisors (see below), whose sum is σ = 1906128. Its totient is φ = 290400.

The previous prime is 865121. The next prime is 865153. The reversal of 865150 is 51568.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66544 + ... + 66556.

It is an arithmetic number, because the mean of its divisors is an integer number (39711).

2⁸⁶⁵¹⁵⁰ is an apocalyptic number.

865150 is an abundant number, since it is smaller than the sum of its proper divisors (1040978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865150 is a wasteful number, since it uses less digits than its factorization.

865150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 865150 is about 930.1343988908. The cubic root of 865150 is about 95.2863015875.

The spelling of 865150 in words is "eight hundred sixty-five thousand, one hundred fifty".