68858851 has 2 divisors, whose sum is σ = 68858852. Its totient is φ = 68858850.

The previous prime is 68858837. The next prime is 68858863. The reversal of 68858851 is 15885886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68858851 - 2¹⁷ = 68727779 is a prime.

It is a super-2 number, since 2×68858851² = 9483082722080402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68858795 and 68858804.

It is not a weakly prime, because it can be changed into another prime (68852851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34429425 + 34429426.

It is an arithmetic number, because the mean of its divisors is an integer number (34429426).

Almost surely, 2^68858851 is an apocalyptic number.

68858851 is a deficient number, since it is larger than the sum of its proper divisors (1).

68858851 is an equidigital number, since it uses as much as digits as its factorization.

68858851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 614400, while the sum is 49.

The square root of 68858851 is about 8298.1233420575. The cubic root of 68858851 is about 409.8767247865.

It can be divided in two parts, 6885885 and 1, that added together give a palindrome (6885886).

The spelling of 68858851 in words is "sixty-eight million, eight hundred fifty-eight thousand, eight hundred fifty-one".