616436161 has 16 divisors (see below), whose sum is σ = 694552320. Its totient is φ = 542270080.

The previous prime is 616436159. The next prime is 616436173. The reversal of 616436161 is 161634616.

It is not a de Polignac number, because 616436161 - 2¹ = 616436159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616436101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39315 + ... + 52711.

It is an arithmetic number, because the mean of its divisors is an integer number (43409520).

Almost surely, 2^616436161 is an apocalyptic number.

It is an amenable number.

616436161 is a deficient number, since it is larger than the sum of its proper divisors (78116159).

616436161 is a wasteful number, since it uses less digits than its factorization.

616436161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13544.

The product of its digits is 15552, while the sum is 34.

The square root of 616436161 is about 24828.1324509114. The cubic root of 616436161 is about 851.0649447836.

The spelling of 616436161 in words is "six hundred sixteen million, four hundred thirty-six thousand, one hundred sixty-one".