68880751 has 2 divisors, whose sum is σ = 68880752. Its totient is φ = 68880750.

The previous prime is 68880737. The next prime is 68880839. The reversal of 68880751 is 15708886.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68880751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68880698 and 68880707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68880731) 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, 34440375 + 34440376.

It is an arithmetic number, because the mean of its divisors is an integer number (34440376).

Almost surely, 2^68880751 is an apocalyptic number.

68880751 is a deficient number, since it is larger than the sum of its proper divisors (1).

68880751 is an equidigital number, since it uses as much as digits as its factorization.

68880751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 68880751 is about 8299.4428126230. The cubic root of 68880751 is about 409.9201728386.

The spelling of 68880751 in words is "sixty-eight million, eight hundred eighty thousand, seven hundred fifty-one".