60505691 has 2 divisors, whose sum is σ = 60505692. Its totient is φ = 60505690.

The previous prime is 60505661. The next prime is 60505723. The reversal of 60505691 is 19650506.

It is an a-pointer prime, because the next prime (60505723) can be obtained adding 60505691 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 60505691 - 2¹⁰ = 60504667 is a prime.

It is not a weakly prime, because it can be changed into another prime (60505631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30252845 + 30252846.

It is an arithmetic number, because the mean of its divisors is an integer number (30252846).

Almost surely, 2^60505691 is an apocalyptic number.

60505691 is a deficient number, since it is larger than the sum of its proper divisors (1).

60505691 is an equidigital number, since it uses as much as digits as its factorization.

60505691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 60505691 is about 7778.5404157850. The cubic root of 60505691 is about 392.5835293577.

The spelling of 60505691 in words is "sixty million, five hundred five thousand, six hundred ninety-one".