673722641 has 2 divisors, whose sum is σ = 673722642. Its totient is φ = 673722640.

The previous prime is 673722617. The next prime is 673722683. The reversal of 673722641 is 146227376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669722641 + 4000000 = 25879^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 673722641 - 2¹⁰ = 673721617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 673722595 and 673722604.

It is not a weakly prime, because it can be changed into another prime (673722041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336861320 + 336861321.

It is an arithmetic number, because the mean of its divisors is an integer number (336861321).

Almost surely, 2^673722641 is an apocalyptic number.

It is an amenable number.

673722641 is a deficient number, since it is larger than the sum of its proper divisors (1).

673722641 is an equidigital number, since it uses as much as digits as its factorization.

673722641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 673722641 is about 25956.1676870835. The cubic root of 673722641 is about 876.6516357032.

The spelling of 673722641 in words is "six hundred seventy-three million, seven hundred twenty-two thousand, six hundred forty-one".