673245361 has 2 divisors, whose sum is σ = 673245362. Its totient is φ = 673245360.

The previous prime is 673245341. The next prime is 673245409. The reversal of 673245361 is 163542376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508277025 + 164968336 = 22545^2 + 12844^2 .

It is a cyclic number.

It is not a de Polignac number, because 673245361 - 2⁷ = 673245233 is a prime.

It is a super-2 number, since 2×673245361² = 906518632216040642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 673245361.

It is not a weakly prime, because it can be changed into another prime (673245301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336622680 + 336622681.

It is an arithmetic number, because the mean of its divisors is an integer number (336622681).

Almost surely, 2^673245361 is an apocalyptic number.

It is an amenable number.

673245361 is a deficient number, since it is larger than the sum of its proper divisors (1).

673245361 is an equidigital number, since it uses as much as digits as its factorization.

673245361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 37.

The square root of 673245361 is about 25946.9720969519. The cubic root of 673245361 is about 876.4445736723. Note that the first 3 decimals are identical.

The spelling of 673245361 in words is "six hundred seventy-three million, two hundred forty-five thousand, three hundred sixty-one".