68815673 has 2 divisors, whose sum is σ = 68815674. Its totient is φ = 68815672.

The previous prime is 68815651. The next prime is 68815687. The reversal of 68815673 is 37651886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67947049 + 868624 = 8243^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 68815673 - 2²⁴ = 52038457 is a prime.

It is not a weakly prime, because it can be changed into another prime (68815603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34407836 + 34407837.

It is an arithmetic number, because the mean of its divisors is an integer number (34407837).

Almost surely, 2^68815673 is an apocalyptic number.

It is an amenable number.

68815673 is a deficient number, since it is larger than the sum of its proper divisors (1).

68815673 is an equidigital number, since it uses as much as digits as its factorization.

68815673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 68815673 is about 8295.5212615001. The cubic root of 68815673 is about 409.7910356927.

It can be divided in two parts, 688 and 15673, that added together give a palindrome (16361).

The spelling of 68815673 in words is "sixty-eight million, eight hundred fifteen thousand, six hundred seventy-three".