616061161 has 2 divisors, whose sum is σ = 616061162. Its totient is φ = 616061160.

The previous prime is 616061093. The next prime is 616061179. The reversal of 616061161 is 161160616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 615982761 + 78400 = 24819^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 616061161 - 2²¹ = 613964009 is a prime.

It is not a weakly prime, because it can be changed into another prime (616061261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308030580 + 308030581.

It is an arithmetic number, because the mean of its divisors is an integer number (308030581).

Almost surely, 2^616061161 is an apocalyptic number.

It is an amenable number.

616061161 is a deficient number, since it is larger than the sum of its proper divisors (1).

616061161 is an equidigital number, since it uses as much as digits as its factorization.

616061161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 616061161 is about 24820.5793848572. The cubic root of 616061161 is about 850.8923321039.

The spelling of 616061161 in words is "six hundred sixteen million, sixty-one thousand, one hundred sixty-one".