68666803 has 2 divisors, whose sum is σ = 68666804. Its totient is φ = 68666802.

The previous prime is 68666777. The next prime is 68666821. The reversal of 68666803 is 30866686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68666803 - 2²¹ = 66569651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68666803.

It is not a weakly prime, because it can be changed into another prime (68666833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34333401 + 34333402.

It is an arithmetic number, because the mean of its divisors is an integer number (34333402).

Almost surely, 2^68666803 is an apocalyptic number.

68666803 is a deficient number, since it is larger than the sum of its proper divisors (1).

68666803 is an equidigital number, since it uses as much as digits as its factorization.

68666803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 68666803 is about 8286.5434892964. The cubic root of 68666803 is about 409.4953199388.

The spelling of 68666803 in words is "sixty-eight million, six hundred sixty-six thousand, eight hundred three".