614081561 has 2 divisors, whose sum is σ = 614081562. Its totient is φ = 614081560.

The previous prime is 614081557. The next prime is 614081569. The reversal of 614081561 is 165180416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544942336 + 69139225 = 23344^2 + 8315^2 .

It is a cyclic number.

It is not a de Polignac number, because 614081561 - 2² = 614081557 is a prime.

It is not a weakly prime, because it can be changed into another prime (614081569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307040780 + 307040781.

It is an arithmetic number, because the mean of its divisors is an integer number (307040781).

Almost surely, 2^614081561 is an apocalyptic number.

It is an amenable number.

614081561 is a deficient number, since it is larger than the sum of its proper divisors (1).

614081561 is an equidigital number, since it uses as much as digits as its factorization.

614081561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 614081561 is about 24780.6690991184. The cubic root of 614081561 is about 849.9799584663.

The spelling of 614081561 in words is "six hundred fourteen million, eighty-one thousand, five hundred sixty-one".