68973137 has 2 divisors, whose sum is σ = 68973138. Its totient is φ = 68973136.

The previous prime is 68973133. The next prime is 68973167. The reversal of 68973137 is 73137986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44609041 + 24364096 = 6679^2 + 4936^2 .

It is a cyclic number.

It is not a de Polignac number, because 68973137 - 2² = 68973133 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68973133) 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, 34486568 + 34486569.

It is an arithmetic number, because the mean of its divisors is an integer number (34486569).

Almost surely, 2^68973137 is an apocalyptic number.

It is an amenable number.

68973137 is a deficient number, since it is larger than the sum of its proper divisors (1).

68973137 is an equidigital number, since it uses as much as digits as its factorization.

68973137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 68973137 is about 8305.0067429232. The cubic root of 68973137 is about 410.1033588315.

The spelling of 68973137 in words is "sixty-eight million, nine hundred seventy-three thousand, one hundred thirty-seven".