68844751 has 2 divisors, whose sum is σ = 68844752. Its totient is φ = 68844750.

The previous prime is 68844739. The next prime is 68844757. The reversal of 68844751 is 15744886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68844751 - 2²¹ = 66747599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68844698 and 68844707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68844757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34422375 + 34422376.

It is an arithmetic number, because the mean of its divisors is an integer number (34422376).

Almost surely, 2^68844751 is an apocalyptic number.

68844751 is a deficient number, since it is larger than the sum of its proper divisors (1).

68844751 is an equidigital number, since it uses as much as digits as its factorization.

68844751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 68844751 is about 8297.2737088757. The cubic root of 68844751 is about 409.8487465080.

The spelling of 68844751 in words is "sixty-eight million, eight hundred forty-four thousand, seven hundred fifty-one".