68436751 has 2 divisors, whose sum is σ = 68436752. Its totient is φ = 68436750.

The previous prime is 68436721. The next prime is 68436757. The reversal of 68436751 is 15763486.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68436751 - 2¹¹ = 68434703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68436757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34218375 + 34218376.

It is an arithmetic number, because the mean of its divisors is an integer number (34218376).

Almost surely, 2^68436751 is an apocalyptic number.

68436751 is a deficient number, since it is larger than the sum of its proper divisors (1).

68436751 is an equidigital number, since it uses as much as digits as its factorization.

68436751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 68436751 is about 8272.6507843617. The cubic root of 68436751 is about 409.0375023150.

The spelling of 68436751 in words is "sixty-eight million, four hundred thirty-six thousand, seven hundred fifty-one".