68191033 has 2 divisors, whose sum is σ = 68191034. Its totient is φ = 68191032.

The previous prime is 68191007. The next prime is 68191043. The reversal of 68191033 is 33019186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50651689 + 17539344 = 7117^2 + 4188^2 .

It is a cyclic number.

It is not a de Polignac number, because 68191033 - 2⁵ = 68191001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68190986 and 68191004.

It is not a weakly prime, because it can be changed into another prime (68191003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34095516 + 34095517.

It is an arithmetic number, because the mean of its divisors is an integer number (34095517).

Almost surely, 2^68191033 is an apocalyptic number.

It is an amenable number.

68191033 is a deficient number, since it is larger than the sum of its proper divisors (1).

68191033 is an equidigital number, since it uses as much as digits as its factorization.

68191033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 68191033 is about 8257.7862045466. The cubic root of 68191033 is about 408.5473738135.

The spelling of 68191033 in words is "sixty-eight million, one hundred ninety-one thousand, thirty-three".