673384819 has 2 divisors, whose sum is σ = 673384820. Its totient is φ = 673384818.

The previous prime is 673384799. The next prime is 673384837. The reversal of 673384819 is 918483376.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 673384819 - 2⁵ = 673384787 is a prime.

It is a super-2 number, since 2×673384819² = 906894228919325522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (673384879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336692409 + 336692410.

It is an arithmetic number, because the mean of its divisors is an integer number (336692410).

Almost surely, 2^673384819 is an apocalyptic number.

673384819 is a deficient number, since it is larger than the sum of its proper divisors (1).

673384819 is an equidigital number, since it uses as much as digits as its factorization.

673384819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 673384819 is about 25949.6593233900. The cubic root of 673384819 is about 876.5050859194.

The spelling of 673384819 in words is "six hundred seventy-three million, three hundred eighty-four thousand, eight hundred nineteen".