616811 has 8 divisors (see below), whose sum is σ = 703584. Its totient is φ = 535680.

The previous prime is 616799. The next prime is 616829. The reversal of 616811 is 118616.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 616811 - 2¹⁸ = 354667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (87948).

2⁶¹⁶⁸¹¹ is an apocalyptic number.

616811 is a deficient number, since it is larger than the sum of its proper divisors (86773).

616811 is a wasteful number, since it uses less digits than its factorization.

616811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821.

The product of its digits is 288, while the sum is 23.

The square root of 616811 is about 785.3731597145. The cubic root of 616811 is about 85.1237413410.

The spelling of 616811 in words is "six hundred sixteen thousand, eight hundred eleven".