68449651 has 2 divisors, whose sum is σ = 68449652. Its totient is φ = 68449650.

The previous prime is 68449613. The next prime is 68449669. The reversal of 68449651 is 15694486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68449651 - 2⁷ = 68449523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68449598 and 68449607.

It is not a weakly prime, because it can be changed into another prime (68449681) 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, 34224825 + 34224826.

It is an arithmetic number, because the mean of its divisors is an integer number (34224826).

Almost surely, 2^68449651 is an apocalyptic number.

68449651 is a deficient number, since it is larger than the sum of its proper divisors (1).

68449651 is an equidigital number, since it uses as much as digits as its factorization.

68449651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 68449651 is about 8273.4304251622. The cubic root of 68449651 is about 409.0632012375.

The spelling of 68449651 in words is "sixty-eight million, four hundred forty-nine thousand, six hundred fifty-one".