68666263 has 2 divisors, whose sum is σ = 68666264. Its totient is φ = 68666262.

The previous prime is 68666261. The next prime is 68666303. The reversal of 68666263 is 36266686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68666263 - 2¹ = 68666261 is a prime.

Together with 68666261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68666261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34333131 + 34333132.

It is an arithmetic number, because the mean of its divisors is an integer number (34333132).

Almost surely, 2^68666263 is an apocalyptic number.

68666263 is a deficient number, since it is larger than the sum of its proper divisors (1).

68666263 is an equidigital number, since it uses as much as digits as its factorization.

68666263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 43.

The square root of 68666263 is about 8286.5109062862. The cubic root of 68666263 is about 409.4942465038.

The spelling of 68666263 in words is "sixty-eight million, six hundred sixty-six thousand, two hundred sixty-three".