868616 has 16 divisors (see below), whose sum is σ = 1861440. Its totient is φ = 372240.

The previous prime is 868613. The next prime is 868639. The reversal of 868616 is 616868.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (868613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7700 + ... + 7811.

It is an arithmetic number, because the mean of its divisors is an integer number (116340).

2⁸⁶⁸⁶¹⁶ is an apocalyptic number.

It is an amenable number.

868616 is an abundant number, since it is smaller than the sum of its proper divisors (992824).

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

868616 is a wasteful number, since it uses less digits than its factorization.

868616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15524 (or 15520 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 868616 is about 931.9957081446. The cubic root of 868616 is about 95.4133786891.

The spelling of 868616 in words is "eight hundred sixty-eight thousand, six hundred sixteen".