68869651 has 2 divisors, whose sum is σ = 68869652. Its totient is φ = 68869650.

The previous prime is 68869643. The next prime is 68869663. The reversal of 68869651 is 15696886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68869651 - 2³ = 68869643 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68869595 and 68869604.

It is not a weakly prime, because it can be changed into another prime (68869621) 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, 34434825 + 34434826.

It is an arithmetic number, because the mean of its divisors is an integer number (34434826).

Almost surely, 2^68869651 is an apocalyptic number.

68869651 is a deficient number, since it is larger than the sum of its proper divisors (1).

68869651 is an equidigital number, since it uses as much as digits as its factorization.

68869651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 49.

The square root of 68869651 is about 8298.7740660895. The cubic root of 68869651 is about 409.8981523743.

The spelling of 68869651 in words is "sixty-eight million, eight hundred sixty-nine thousand, six hundred fifty-one".