667230397 has 2 divisors, whose sum is σ = 667230398. Its totient is φ = 667230396.

The previous prime is 667230373. The next prime is 667230413. The reversal of 667230397 is 793032766.

667230397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646125561 + 21104836 = 25419^2 + 4594^2 .

It is a cyclic number.

It is not a de Polignac number, because 667230397 - 2¹⁹ = 666706109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667230307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333615198 + 333615199.

It is an arithmetic number, because the mean of its divisors is an integer number (333615199).

Almost surely, 2^667230397 is an apocalyptic number.

It is an amenable number.

667230397 is a deficient number, since it is larger than the sum of its proper divisors (1).

667230397 is an equidigital number, since it uses as much as digits as its factorization.

667230397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 43.

The square root of 667230397 is about 25830.8032589000. The cubic root of 667230397 is about 873.8266272680.

The spelling of 667230397 in words is "six hundred sixty-seven million, two hundred thirty thousand, three hundred ninety-seven".