68418851 has 2 divisors, whose sum is σ = 68418852. Its totient is φ = 68418850.

The previous prime is 68418827. The next prime is 68418871. The reversal of 68418851 is 15881486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68418851 - 2¹⁰ = 68417827 is a prime.

It is a super-2 number, since 2×68418851² = 9362278344320402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 68418799 and 68418808.

It is not a weakly prime, because it can be changed into another prime (68418821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34209425 + 34209426.

It is an arithmetic number, because the mean of its divisors is an integer number (34209426).

Almost surely, 2^68418851 is an apocalyptic number.

68418851 is a deficient number, since it is larger than the sum of its proper divisors (1).

68418851 is an equidigital number, since it uses as much as digits as its factorization.

68418851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 41.

The square root of 68418851 is about 8271.5688354749. The cubic root of 68418851 is about 409.0018372197.

The spelling of 68418851 in words is "sixty-eight million, four hundred eighteen thousand, eight hundred fifty-one".