660472201 has 2 divisors, whose sum is σ = 660472202. Its totient is φ = 660472200.

The previous prime is 660472181. The next prime is 660472213. The reversal of 660472201 is 102274066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484220025 + 176252176 = 22005^2 + 13276^2 .

It is a cyclic number.

It is not a de Polignac number, because 660472201 - 2⁹ = 660471689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660472201.

It is not a weakly prime, because it can be changed into another prime (660472271) 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, 330236100 + 330236101.

It is an arithmetic number, because the mean of its divisors is an integer number (330236101).

Almost surely, 2^660472201 is an apocalyptic number.

It is an amenable number.

660472201 is a deficient number, since it is larger than the sum of its proper divisors (1).

660472201 is an equidigital number, since it uses as much as digits as its factorization.

660472201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 660472201 is about 25699.6537136203. The cubic root of 660472201 is about 870.8663589824.

The spelling of 660472201 in words is "six hundred sixty million, four hundred seventy-two thousand, two hundred one".