673340761 has 2 divisors, whose sum is σ = 673340762. Its totient is φ = 673340760.

The previous prime is 673340747. The next prime is 673340809. The reversal of 673340761 is 167043376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 535043161 + 138297600 = 23131^2 + 11760^2 .

It is a cyclic number.

It is not a de Polignac number, because 673340761 - 2¹⁷ = 673209689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673340761.

It is not a weakly prime, because it can be changed into another prime (673340711) 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, 336670380 + 336670381.

It is an arithmetic number, because the mean of its divisors is an integer number (336670381).

Almost surely, 2^673340761 is an apocalyptic number.

It is an amenable number.

673340761 is a deficient number, since it is larger than the sum of its proper divisors (1).

673340761 is an equidigital number, since it uses as much as digits as its factorization.

673340761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 673340761 is about 25948.8103966251. The cubic root of 673340761 is about 876.4859696072.

The spelling of 673340761 in words is "six hundred seventy-three million, three hundred forty thousand, seven hundred sixty-one".