673866049 has 2 divisors, whose sum is σ = 673866050. Its totient is φ = 673866048.

The previous prime is 673866031. The next prime is 673866091. The reversal of 673866049 is 940668376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 655718449 + 18147600 = 25607^2 + 4260^2 .

It is a cyclic number.

It is not a de Polignac number, because 673866049 - 2¹¹ = 673864001 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 673865993 and 673866011.

It is not a weakly prime, because it can be changed into another prime (673863049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336933024 + 336933025.

It is an arithmetic number, because the mean of its divisors is an integer number (336933025).

Almost surely, 2^673866049 is an apocalyptic number.

It is an amenable number.

673866049 is a deficient number, since it is larger than the sum of its proper divisors (1).

673866049 is an equidigital number, since it uses as much as digits as its factorization.

673866049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 673866049 is about 25958.9300434359. The cubic root of 673866049 is about 876.7138323852.

The spelling of 673866049 in words is "six hundred seventy-three million, eight hundred sixty-six thousand, forty-nine".