616866 has 8 divisors (see below), whose sum is σ = 1233744. Its totient is φ = 205620.

The previous prime is 616849. The next prime is 616871. The reversal of 616866 is 668616.

It is a sphenic number, since it is the product of 3 distinct primes.

616866 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51400 + ... + 51411.

It is an arithmetic number, because the mean of its divisors is an integer number (154218).

2⁶¹⁶⁸⁶⁶ is an apocalyptic number.

616866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

616866 is a wasteful number, since it uses less digits than its factorization.

616866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102816.

The product of its digits is 10368, while the sum is 33.

The square root of 616866 is about 785.4081741362. The cubic root of 616866 is about 85.1262713794.

The spelling of 616866 in words is "six hundred sixteen thousand, eight hundred sixty-six".