68877973 has 2 divisors, whose sum is σ = 68877974. Its totient is φ = 68877972.

The previous prime is 68877937. The next prime is 68877997. The reversal of 68877973 is 37977886.

Together with previous prime (68877937) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62441604 + 6436369 = 7902^2 + 2537^2 .

It is a cyclic number.

It is not a de Polignac number, because 68877973 - 2¹³ = 68869781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68877923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34438986 + 34438987.

It is an arithmetic number, because the mean of its divisors is an integer number (34438987).

Almost surely, 2^68877973 is an apocalyptic number.

It is an amenable number.

68877973 is a deficient number, since it is larger than the sum of its proper divisors (1).

68877973 is an equidigital number, since it uses as much as digits as its factorization.

68877973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 55.

The square root of 68877973 is about 8299.2754503029. The cubic root of 68877973 is about 409.9146619930.

The spelling of 68877973 in words is "sixty-eight million, eight hundred seventy-seven thousand, nine hundred seventy-three".