68924917 has 2 divisors, whose sum is σ = 68924918. Its totient is φ = 68924916.

The previous prime is 68924897. The next prime is 68924927. The reversal of 68924917 is 71942986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65918161 + 3006756 = 8119^2 + 1734^2 .

It is a cyclic number.

It is not a de Polignac number, because 68924917 - 2⁷ = 68924789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68924927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34462458 + 34462459.

It is an arithmetic number, because the mean of its divisors is an integer number (34462459).

Almost surely, 2^68924917 is an apocalyptic number.

It is an amenable number.

68924917 is a deficient number, since it is larger than the sum of its proper divisors (1).

68924917 is an equidigital number, since it uses as much as digits as its factorization.

68924917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 68924917 is about 8302.1031672703. The cubic root of 68924917 is about 410.0077670549.

The spelling of 68924917 in words is "sixty-eight million, nine hundred twenty-four thousand, nine hundred seventeen".