861102 has 24 divisors (see below), whose sum is σ = 2035800. Its totient is φ = 260880.

The previous prime is 861089. The next prime is 861109. The reversal of 861102 is 201168.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861109) by changing a digit.

861102 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 11 ways as a sum of consecutive naturals, for example, 1977 + ... + 2372.

It is an arithmetic number, because the mean of its divisors is an integer number (84825).

2⁸⁶¹¹⁰² is an apocalyptic number.

861102 is an abundant number, since it is smaller than the sum of its proper divisors (1174698).

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

861102 is a wasteful number, since it uses less digits than its factorization.

861102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368 (or 4365 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 861102 is about 927.9558179138. The cubic root of 861102 is about 95.1374556822.

The spelling of 861102 in words is "eight hundred sixty-one thousand, one hundred two".