60921569 has 2 divisors, whose sum is σ = 60921570. Its totient is φ = 60921568.

The previous prime is 60921527. The next prime is 60921587. The reversal of 60921569 is 96512906.

60921569 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., 41667025 + 19254544 = 6455^2 + 4388^2 .

It is a cyclic number.

It is not a de Polignac number, because 60921569 - 2⁸ = 60921313 is a prime.

It is a super-2 number, since 2×60921569² = 7422875138843522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (60921599) 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, 30460784 + 30460785.

It is an arithmetic number, because the mean of its divisors is an integer number (30460785).

Almost surely, 2^60921569 is an apocalyptic number.

It is an amenable number.

60921569 is a deficient number, since it is larger than the sum of its proper divisors (1).

60921569 is an equidigital number, since it uses as much as digits as its factorization.

60921569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 60921569 is about 7805.2270306507. The cubic root of 60921569 is about 393.4809337048.

The spelling of 60921569 in words is "sixty million, nine hundred twenty-one thousand, five hundred sixty-nine".