616705 has 4 divisors (see below), whose sum is σ = 740052. Its totient is φ = 493360.

The previous prime is 616703. The next prime is 616717. The reversal of 616705 is 507616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450241 + 166464 = 671^2 + 408^2 .

It is not a de Polignac number, because 616705 - 2¹ = 616703 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 616705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61666 + ... + 61675.

It is an arithmetic number, because the mean of its divisors is an integer number (185013).

2⁶¹⁶⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

616705 is a deficient number, since it is larger than the sum of its proper divisors (123347).

616705 is a wasteful number, since it uses less digits than its factorization.

616705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123346.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 616705 is about 785.3056729707. The cubic root of 616705 is about 85.1188648426.

The spelling of 616705 in words is "six hundred sixteen thousand, seven hundred five".