68825819 has 2 divisors, whose sum is σ = 68825820. Its totient is φ = 68825818.

The previous prime is 68825791. The next prime is 68825831. The reversal of 68825819 is 91852886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68825819 - 2⁸ = 68825563 is a prime.

It is a super-2 number, since 2×68825819² = 9473986722041522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (68825849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34412909 + 34412910.

It is an arithmetic number, because the mean of its divisors is an integer number (34412910).

Almost surely, 2^68825819 is an apocalyptic number.

68825819 is a deficient number, since it is larger than the sum of its proper divisors (1).

68825819 is an equidigital number, since it uses as much as digits as its factorization.

68825819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 47.

The square root of 68825819 is about 8296.1327737688. The cubic root of 68825819 is about 409.8111742036.

The spelling of 68825819 in words is "sixty-eight million, eight hundred twenty-five thousand, eight hundred nineteen".