616129 has 2 divisors, whose sum is σ = 616130. Its totient is φ = 616128.

The previous prime is 616117. The next prime is 616139. The reversal of 616129 is 921616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 565504 + 50625 = 752^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 616129 - 2⁹ = 615617 is a prime.

It is a super-2 number, since 2×616129² = 759229889282, which contains 22 as substring.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308064 + 308065.

It is an arithmetic number, because the mean of its divisors is an integer number (308065).

2⁶¹⁶¹²⁹ is an apocalyptic number.

It is an amenable number.

616129 is a deficient number, since it is larger than the sum of its proper divisors (1).

616129 is an equidigital number, since it uses as much as digits as its factorization.

616129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 25.

The square root of 616129 is about 784.9388511215. The cubic root of 616129 is about 85.0923563617.

The spelling of 616129 in words is "six hundred sixteen thousand, one hundred twenty-nine".