616160561 has 4 divisors (see below), whose sum is σ = 616272372. Its totient is φ = 616048752.

The previous prime is 616160551. The next prime is 616160569. The reversal of 616160561 is 165061616.

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 325116961 + 291043600 = 18031^2 + 17060^2 .

It is a cyclic number.

It is not a de Polignac number, because 616160561 - 2⁶ = 616160497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616160569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47186 + ... + 58811.

It is an arithmetic number, because the mean of its divisors is an integer number (154068093).

Almost surely, 2^616160561 is an apocalyptic number.

It is an amenable number.

616160561 is a deficient number, since it is larger than the sum of its proper divisors (111811).

616160561 is a wasteful number, since it uses less digits than its factorization.

616160561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111810.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 616160561 is about 24822.5816747574. The cubic root of 616160561 is about 850.9380927928.

The spelling of 616160561 in words is "six hundred sixteen million, one hundred sixty thousand, five hundred sixty-one".