673857347 has 2 divisors, whose sum is σ = 673857348. Its totient is φ = 673857346.

The previous prime is 673857337. The next prime is 673857383. The reversal of 673857347 is 743758376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673857347 - 2⁸ = 673857091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 673857295 and 673857304.

It is not a weakly prime, because it can be changed into another prime (673857337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336928673 + 336928674.

It is an arithmetic number, because the mean of its divisors is an integer number (336928674).

Almost surely, 2^673857347 is an apocalyptic number.

673857347 is a deficient number, since it is larger than the sum of its proper divisors (1).

673857347 is an equidigital number, since it uses as much as digits as its factorization.

673857347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 50.

The square root of 673857347 is about 25958.7624319805. The cubic root of 673857347 is about 876.7100585409.

The spelling of 673857347 in words is "six hundred seventy-three million, eight hundred fifty-seven thousand, three hundred forty-seven".