66874201 has 2 divisors, whose sum is σ = 66874202. Its totient is φ = 66874200.

The previous prime is 66874193. The next prime is 66874229. The reversal of 66874201 is 10247866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66846976 + 27225 = 8176^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 66874201 - 2³ = 66874193 is a prime.

It is not a weakly prime, because it can be changed into another prime (66874231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33437100 + 33437101.

It is an arithmetic number, because the mean of its divisors is an integer number (33437101).

Almost surely, 2^66874201 is an apocalyptic number.

It is an amenable number.

66874201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66874201 is an equidigital number, since it uses as much as digits as its factorization.

66874201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 66874201 is about 8177.6647644667. The cubic root of 66874201 is about 405.9004524314.

The spelling of 66874201 in words is "sixty-six million, eight hundred seventy-four thousand, two hundred one".