616060561 has 4 divisors (see below), whose sum is σ = 616299300. Its totient is φ = 615821824.

The previous prime is 616060517. The next prime is 616060591. The reversal of 616060561 is 165060616.

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 96904336 + 519156225 = 9844^2 + 22785^2 .

It is a cyclic number.

It is not a de Polignac number, because 616060561 - 2¹³ = 616052369 is a prime.

It is a super-2 number, since 2×616060561² = 759061229639269442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616060591) 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 3 ways as a sum of consecutive naturals, for example, 115456 + ... + 120673.

It is an arithmetic number, because the mean of its divisors is an integer number (154074825).

Almost surely, 2^616060561 is an apocalyptic number.

It is an amenable number.

616060561 is a deficient number, since it is larger than the sum of its proper divisors (238739).

616060561 is a wasteful number, since it uses less digits than its factorization.

616060561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238738.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 616060561 is about 24820.5672981098. The cubic root of 616060561 is about 850.8920558675.

The spelling of 616060561 in words is "six hundred sixteen million, sixty thousand, five hundred sixty-one".