68418773 has 2 divisors, whose sum is σ = 68418774. Its totient is φ = 68418772.

The previous prime is 68418703. The next prime is 68418781. The reversal of 68418773 is 37781486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42276004 + 26142769 = 6502^2 + 5113^2 .

It is a cyclic number.

It is not a de Polignac number, because 68418773 - 2⁸ = 68418517 is a prime.

It is a super-2 number, since 2×68418773² = 9362256997651058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68418703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34209386 + 34209387.

It is an arithmetic number, because the mean of its divisors is an integer number (34209387).

Almost surely, 2^68418773 is an apocalyptic number.

It is an amenable number.

68418773 is a deficient number, since it is larger than the sum of its proper divisors (1).

68418773 is an equidigital number, since it uses as much as digits as its factorization.

68418773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 68418773 is about 8271.5641205276. The cubic root of 68418773 is about 409.0016817940.

The spelling of 68418773 in words is "sixty-eight million, four hundred eighteen thousand, seven hundred seventy-three".