864616 has 32 divisors (see below), whose sum is σ = 1751040. Its totient is φ = 399168.

The previous prime is 864613. The next prime is 864623. The reversal of 864616 is 616468.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (864613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6745 + ... + 6871.

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

2⁸⁶⁴⁶¹⁶ is an apocalyptic number.

It is an amenable number.

864616 is an abundant number, since it is smaller than the sum of its proper divisors (886424).

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

864616 is a wasteful number, since it uses less digits than its factorization.

864616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 189 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 864616 is about 929.8472992917. The cubic root of 864616 is about 95.2666929040.

The spelling of 864616 in words is "eight hundred sixty-four thousand, six hundred sixteen".