667970353 has 2 divisors, whose sum is σ = 667970354. Its totient is φ = 667970352.

The previous prime is 667970351. The next prime is 667970377. The reversal of 667970353 is 353079766.

667970353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 663938289 + 4032064 = 25767^2 + 2008^2 .

It is a cyclic number.

It is not a de Polignac number, because 667970353 - 2¹ = 667970351 is a prime.

Together with 667970351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (667970351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333985176 + 333985177.

It is an arithmetic number, because the mean of its divisors is an integer number (333985177).

Almost surely, 2^667970353 is an apocalyptic number.

It is an amenable number.

667970353 is a deficient number, since it is larger than the sum of its proper divisors (1).

667970353 is an equidigital number, since it uses as much as digits as its factorization.

667970353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 46.

The square root of 667970353 is about 25845.1224218420. The cubic root of 667970353 is about 874.1495314116.

The spelling of 667970353 in words is "six hundred sixty-seven million, nine hundred seventy thousand, three hundred fifty-three".