616513 has 2 divisors, whose sum is σ = 616514. Its totient is φ = 616512.

The previous prime is 616507. The next prime is 616519. The reversal of 616513 is 315616.

It is a balanced prime because it is at equal distance from previous prime (616507) and next prime (616519).

It can be written as a sum of positive squares in only one way, i.e., 588289 + 28224 = 767^2 + 168^2 .

It is a cyclic number.

It is not a de Polignac number, because 616513 - 2⁵ = 616481 is a prime.

It is not a weakly prime, because it can be changed into another prime (616519) 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 as a sum of consecutive naturals, namely, 308256 + 308257.

It is an arithmetic number, because the mean of its divisors is an integer number (308257).

2⁶¹⁶⁵¹³ is an apocalyptic number.

It is an amenable number.

616513 is a deficient number, since it is larger than the sum of its proper divisors (1).

616513 is an equidigital number, since it uses as much as digits as its factorization.

616513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 22.

The square root of 616513 is about 785.1834180623. The cubic root of 616513 is about 85.1100305170.

The spelling of 616513 in words is "six hundred sixteen thousand, five hundred thirteen".