673722617 has 2 divisors, whose sum is σ = 673722618. Its totient is φ = 673722616.

The previous prime is 673722583. The next prime is 673722641. The reversal of 673722617 is 716227376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647753401 + 25969216 = 25451^2 + 5096^2 .

It is a cyclic number.

It is not a de Polignac number, because 673722617 - 2¹⁰ = 673721593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (673722317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336861308 + 336861309.

It is an arithmetic number, because the mean of its divisors is an integer number (336861309).

Almost surely, 2^673722617 is an apocalyptic number.

It is an amenable number.

673722617 is a deficient number, since it is larger than the sum of its proper divisors (1).

673722617 is an equidigital number, since it uses as much as digits as its factorization.

673722617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 41.

The square root of 673722617 is about 25956.1672247657. The cubic root of 673722617 is about 876.6516252935.

The spelling of 673722617 in words is "six hundred seventy-three million, seven hundred twenty-two thousand, six hundred seventeen".