68553337 has 2 divisors, whose sum is σ = 68553338. Its totient is φ = 68553336.

The previous prime is 68553313. The next prime is 68553343. The reversal of 68553337 is 73335586.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40717161 + 27836176 = 6381^2 + 5276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68553337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68553337.

It is not a weakly prime, because it can be changed into another prime (68553347) 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, 34276668 + 34276669.

It is an arithmetic number, because the mean of its divisors is an integer number (34276669).

Almost surely, 2^68553337 is an apocalyptic number.

It is an amenable number.

68553337 is a deficient number, since it is larger than the sum of its proper divisors (1).

68553337 is an equidigital number, since it uses as much as digits as its factorization.

68553337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 40.

The square root of 68553337 is about 8279.6942576402. The cubic root of 68553337 is about 409.2696436297.

The spelling of 68553337 in words is "sixty-eight million, five hundred fifty-three thousand, three hundred thirty-seven".