68447773 has 2 divisors, whose sum is σ = 68447774. Its totient is φ = 68447772.

The previous prime is 68447719. The next prime is 68447807. The reversal of 68447773 is 37774486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55681444 + 12766329 = 7462^2 + 3573^2 .

It is a cyclic number.

It is not a de Polignac number, because 68447773 - 2²¹ = 66350621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68447713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34223886 + 34223887.

It is an arithmetic number, because the mean of its divisors is an integer number (34223887).

Almost surely, 2^68447773 is an apocalyptic number.

It is an amenable number.

68447773 is a deficient number, since it is larger than the sum of its proper divisors (1).

68447773 is an equidigital number, since it uses as much as digits as its factorization.

68447773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 46.

The square root of 68447773 is about 8273.3169285360. The cubic root of 68447773 is about 409.0594601533.

The spelling of 68447773 in words is "sixty-eight million, four hundred forty-seven thousand, seven hundred seventy-three".