68440763 has 2 divisors, whose sum is σ = 68440764. Its totient is φ = 68440762.

The previous prime is 68440747. The next prime is 68440769. The reversal of 68440763 is 36704486.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68440763 - 2⁴ = 68440747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (68440769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34220381 + 34220382.

It is an arithmetic number, because the mean of its divisors is an integer number (34220382).

Almost surely, 2^68440763 is an apocalyptic number.

68440763 is a deficient number, since it is larger than the sum of its proper divisors (1).

68440763 is an equidigital number, since it uses as much as digits as its factorization.

68440763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 68440763 is about 8272.8932665664. The cubic root of 68440763 is about 409.0454952251.

The spelling of 68440763 in words is "sixty-eight million, four hundred forty thousand, seven hundred sixty-three".