673213091 has 2 divisors, whose sum is σ = 673213092. Its totient is φ = 673213090.

The previous prime is 673213067. The next prime is 673213133. The reversal of 673213091 is 190312376.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673213091 - 2⁶ = 673213027 is a prime.

It is not a weakly prime, because it can be changed into another prime (673212091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336606545 + 336606546.

It is an arithmetic number, because the mean of its divisors is an integer number (336606546).

Almost surely, 2^673213091 is an apocalyptic number.

673213091 is a deficient number, since it is larger than the sum of its proper divisors (1).

673213091 is an equidigital number, since it uses as much as digits as its factorization.

673213091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 673213091 is about 25946.3502443022. The cubic root of 673213091 is about 876.4305702000.

The spelling of 673213091 in words is "six hundred seventy-three million, two hundred thirteen thousand, ninety-one".