68635751 has 2 divisors, whose sum is σ = 68635752. Its totient is φ = 68635750.

The previous prime is 68635729. The next prime is 68635757. The reversal of 68635751 is 15753686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68635751 - 2⁶ = 68635687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68635699 and 68635708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68635757) 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, 34317875 + 34317876.

It is an arithmetic number, because the mean of its divisors is an integer number (34317876).

Almost surely, 2^68635751 is an apocalyptic number.

68635751 is a deficient number, since it is larger than the sum of its proper divisors (1).

68635751 is an equidigital number, since it uses as much as digits as its factorization.

68635751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 68635751 is about 8284.6696373483. The cubic root of 68635751 is about 409.4335843046.

The spelling of 68635751 in words is "sixty-eight million, six hundred thirty-five thousand, seven hundred fifty-one".