616986 has 24 divisors (see below), whose sum is σ = 1351584. Its totient is φ = 203400.

The previous prime is 616961. The next prime is 616991. The reversal of 616986 is 689616.

It is a self number, because there is not a number n which added to its sum of digits gives 616986.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 616986.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2605 + ... + 2831.

It is an arithmetic number, because the mean of its divisors is an integer number (56316).

2⁶¹⁶⁹⁸⁶ is an apocalyptic number.

616986 is an abundant number, since it is smaller than the sum of its proper divisors (734598).

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

616986 is a wasteful number, since it uses less digits than its factorization.

616986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 383 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 616986 is about 785.4845638203. The cubic root of 616986 is about 85.1317909413.

The spelling of 616986 in words is "six hundred sixteen thousand, nine hundred eighty-six".