667051201 has 2 divisors, whose sum is σ = 667051202. Its totient is φ = 667051200.

The previous prime is 667051199. The next prime is 667051223. The reversal of 667051201 is 102150766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666878976 + 172225 = 25824^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 667051201 - 2¹ = 667051199 is a prime.

Together with 667051199, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 667051201.

It is not a weakly prime, because it can be changed into another prime (667051291) 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, 333525600 + 333525601.

It is an arithmetic number, because the mean of its divisors is an integer number (333525601).

Almost surely, 2^667051201 is an apocalyptic number.

It is an amenable number.

667051201 is a deficient number, since it is larger than the sum of its proper divisors (1).

667051201 is an equidigital number, since it uses as much as digits as its factorization.

667051201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 667051201 is about 25827.3343765864. The cubic root of 667051201 is about 873.7483932941.

The spelling of 667051201 in words is "six hundred sixty-seven million, fifty-one thousand, two hundred one".