60566921 has 2 divisors, whose sum is σ = 60566922. Its totient is φ = 60566920.

The previous prime is 60566893. The next prime is 60566923. The reversal of 60566921 is 12966506.

It is a happy number.

60566921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42758521 + 17808400 = 6539^2 + 4220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60566921 is a prime.

Together with 60566923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (60566923) 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 as a sum of consecutive naturals, namely, 30283460 + 30283461.

It is an arithmetic number, because the mean of its divisors is an integer number (30283461).

Almost surely, 2^60566921 is an apocalyptic number.

It is an amenable number.

60566921 is a deficient number, since it is larger than the sum of its proper divisors (1).

60566921 is an equidigital number, since it uses as much as digits as its factorization.

60566921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 60566921 is about 7782.4752489166. The cubic root of 60566921 is about 392.7159124174.

The spelling of 60566921 in words is "sixty million, five hundred sixty-six thousand, nine hundred twenty-one".