68440007 has 2 divisors, whose sum is σ = 68440008. Its totient is φ = 68440006.

The previous prime is 68440003. The next prime is 68440027. The reversal of 68440007 is 70004486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68440007 - 2² = 68440003 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68440003) 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, 34220003 + 34220004.

It is an arithmetic number, because the mean of its divisors is an integer number (34220004).

Almost surely, 2^68440007 is an apocalyptic number.

68440007 is a deficient number, since it is larger than the sum of its proper divisors (1).

68440007 is an equidigital number, since it uses as much as digits as its factorization.

68440007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 68440007 is about 8272.8475750494. The cubic root of 68440007 is about 409.0439891074.

The spelling of 68440007 in words is "sixty-eight million, four hundred forty thousand, seven".