68560993 has 2 divisors, whose sum is σ = 68560994. Its totient is φ = 68560992.

The previous prime is 68560991. The next prime is 68561027. The reversal of 68560993 is 39906586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53100369 + 15460624 = 7287^2 + 3932^2 .

It is a cyclic number.

It is not a de Polignac number, because 68560993 - 2¹ = 68560991 is a prime.

It is a super-2 number, since 2×68560993² = 9401219522292098, which contains 22 as substring.

Together with 68560991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68560991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34280496 + 34280497.

It is an arithmetic number, because the mean of its divisors is an integer number (34280497).

Almost surely, 2^68560993 is an apocalyptic number.

It is an amenable number.

68560993 is a deficient number, since it is larger than the sum of its proper divisors (1).

68560993 is an equidigital number, since it uses as much as digits as its factorization.

68560993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 68560993 is about 8280.1565806451. The cubic root of 68560993 is about 409.2848787342.

The spelling of 68560993 in words is "sixty-eight million, five hundred sixty thousand, nine hundred ninety-three".