616828161 has 16 divisors (see below), whose sum is σ = 829462400. Its totient is φ = 407721600.

The previous prime is 616828159. The next prime is 616828171. The reversal of 616828161 is 161828616.

It is not a de Polignac number, because 616828161 - 2¹ = 616828159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616828171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185211 + ... + 188511.

It is an arithmetic number, because the mean of its divisors is an integer number (51841400).

Almost surely, 2^616828161 is an apocalyptic number.

It is an amenable number.

616828161 is a deficient number, since it is larger than the sum of its proper divisors (212634239).

616828161 is a wasteful number, since it uses less digits than its factorization.

616828161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816.

The product of its digits is 27648, while the sum is 39.

The square root of 616828161 is about 24836.0254670509. The cubic root of 616828161 is about 851.2453077512.

The spelling of 616828161 in words is "six hundred sixteen million, eight hundred twenty-eight thousand, one hundred sixty-one".