66680674703 has 2 divisors, whose sum is σ = 66680674704. Its totient is φ = 66680674702.

The previous prime is 66680674699. The next prime is 66680674747. The reversal of 66680674703 is 30747608666.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66680674703 - 2² = 66680674699 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66680674783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33340337351 + 33340337352.

It is an arithmetic number, because the mean of its divisors is an integer number (33340337352).

Almost surely, 2^66680674703 is an apocalyptic number.

66680674703 is a deficient number, since it is larger than the sum of its proper divisors (1).

66680674703 is an equidigital number, since it uses as much as digits as its factorization.

66680674703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 66680674703 in words is "sixty-six billion, six hundred eighty million, six hundred seventy-four thousand, seven hundred three".