673868057 has 2 divisors, whose sum is σ = 673868058. Its totient is φ = 673868056.

The previous prime is 673868033. The next prime is 673868077. The reversal of 673868057 is 750868376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668687881 + 5180176 = 25859^2 + 2276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673868057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 673867996 and 673868014.

It is not a weakly prime, because it can be changed into another prime (673868077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336934028 + 336934029.

It is an arithmetic number, because the mean of its divisors is an integer number (336934029).

Almost surely, 2^673868057 is an apocalyptic number.

It is an amenable number.

673868057 is a deficient number, since it is larger than the sum of its proper divisors (1).

673868057 is an equidigital number, since it uses as much as digits as its factorization.

673868057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 673868057 is about 25958.9687198856. The cubic root of 673868057 is about 876.7147032010.

The spelling of 673868057 in words is "six hundred seventy-three million, eight hundred sixty-eight thousand, fifty-seven".