673007639 has 2 divisors, whose sum is σ = 673007640. Its totient is φ = 673007638.

The previous prime is 673007597. The next prime is 673007641. The reversal of 673007639 is 936700376.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 673007639 - 2²⁴ = 656230423 is a prime.

Together with 673007641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 673007596 and 673007605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673007239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336503819 + 336503820.

It is an arithmetic number, because the mean of its divisors is an integer number (336503820).

Almost surely, 2^673007639 is an apocalyptic number.

673007639 is a deficient number, since it is larger than the sum of its proper divisors (1).

673007639 is an equidigital number, since it uses as much as digits as its factorization.

673007639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 41.

The square root of 673007639 is about 25942.3907726331. The cubic root of 673007639 is about 876.3414044087.

The spelling of 673007639 in words is "six hundred seventy-three million, seven thousand, six hundred thirty-nine".