68903663 has 2 divisors, whose sum is σ = 68903664. Its totient is φ = 68903662.

The previous prime is 68903629. The next prime is 68903683. The reversal of 68903663 is 36630986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68903663 - 2⁶ = 68903599 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68903663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68903603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34451831 + 34451832.

It is an arithmetic number, because the mean of its divisors is an integer number (34451832).

Almost surely, 2^68903663 is an apocalyptic number.

68903663 is a deficient number, since it is larger than the sum of its proper divisors (1).

68903663 is an equidigital number, since it uses as much as digits as its factorization.

68903663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 68903663 is about 8300.8230314831. The cubic root of 68903663 is about 409.9656187708.

The spelling of 68903663 in words is "sixty-eight million, nine hundred three thousand, six hundred sixty-three".