869816 has 8 divisors (see below), whose sum is σ = 1630920. Its totient is φ = 434904.

The previous prime is 869809. The next prime is 869819. The reversal of 869816 is 618968.

869816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 869816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869819) by changing a digit.

869816 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 as a sum of consecutive naturals, namely, 54356 + ... + 54371.

It is an arithmetic number, because the mean of its divisors is an integer number (203865).

2⁸⁶⁹⁸¹⁶ is an apocalyptic number.

It is an amenable number.

869816 is a deficient number, since it is larger than the sum of its proper divisors (761104).

869816 is a wasteful number, since it uses less digits than its factorization.

869816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108733 (or 108729 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 869816 is about 932.6392657400. The cubic root of 869816 is about 95.4572965881.

The spelling of 869816 in words is "eight hundred sixty-nine thousand, eight hundred sixteen".