671898233 has 2 divisors, whose sum is σ = 671898234. Its totient is φ = 671898232.

The previous prime is 671898223. The next prime is 671898251. The reversal of 671898233 is 332898176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 671431744 + 466489 = 25912^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 671898233 - 2¹⁶ = 671832697 is a prime.

It is not a weakly prime, because it can be changed into another prime (671898223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335949116 + 335949117.

It is an arithmetic number, because the mean of its divisors is an integer number (335949117).

Almost surely, 2^671898233 is an apocalyptic number.

It is an amenable number.

671898233 is a deficient number, since it is larger than the sum of its proper divisors (1).

671898233 is an equidigital number, since it uses as much as digits as its factorization.

671898233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 671898233 is about 25920.9998456850. Note that the first 3 decimals coincide. The cubic root of 671898233 is about 875.8596104156.

The spelling of 671898233 in words is "six hundred seventy-one million, eight hundred ninety-eight thousand, two hundred thirty-three".