861304 has 32 divisors (see below), whose sum is σ = 1751040. Its totient is φ = 396000.

The previous prime is 861299. The next prime is 861317. The reversal of 861304 is 403168.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5629 + ... + 5779.

It is an arithmetic number, because the mean of its divisors is an integer number (54720).

2⁸⁶¹³⁰⁴ is an apocalyptic number.

It is an amenable number.

861304 is an abundant number, since it is smaller than the sum of its proper divisors (889736).

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

861304 is a wasteful number, since it uses less digits than its factorization.

861304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 861304 is about 928.0646529203. The cubic root of 861304 is about 95.1448943145.

The spelling of 861304 in words is "eight hundred sixty-one thousand, three hundred four".