60776561 has 2 divisors, whose sum is σ = 60776562. Its totient is φ = 60776560.

The previous prime is 60776539. The next prime is 60776591. The reversal of 60776561 is 16567706.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36372961 + 24403600 = 6031^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 60776561 - 2²² = 56582257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (60776591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30388280 + 30388281.

It is an arithmetic number, because the mean of its divisors is an integer number (30388281).

Almost surely, 2^60776561 is an apocalyptic number.

It is an amenable number.

60776561 is a deficient number, since it is larger than the sum of its proper divisors (1).

60776561 is an equidigital number, since it uses as much as digits as its factorization.

60776561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 60776561 is about 7795.9323368023. The cubic root of 60776561 is about 393.1684925633.

The spelling of 60776561 in words is "sixty million, seven hundred seventy-six thousand, five hundred sixty-one".