66120473 has 2 divisors, whose sum is σ = 66120474. Its totient is φ = 66120472.

The previous prime is 66120433. The next prime is 66120499. The reversal of 66120473 is 37402166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46076944 + 20043529 = 6788^2 + 4477^2 .

It is a cyclic number.

It is not a de Polignac number, because 66120473 - 2¹⁸ = 65858329 is a prime.

It is not a weakly prime, because it can be changed into another prime (66120433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33060236 + 33060237.

It is an arithmetic number, because the mean of its divisors is an integer number (33060237).

Almost surely, 2^66120473 is an apocalyptic number.

It is an amenable number.

66120473 is a deficient number, since it is larger than the sum of its proper divisors (1).

66120473 is an equidigital number, since it uses as much as digits as its factorization.

66120473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66120473 is about 8131.4496247594. The cubic root of 66120473 is about 404.3697416476.

The spelling of 66120473 in words is "sixty-six million, one hundred twenty thousand, four hundred seventy-three".