66473313 has 16 divisors (see below), whose sum is σ = 92057856. Its totient is φ = 42633360.

The previous prime is 66473293. The next prime is 66473317. The reversal of 66473313 is 31337466.

It is not a de Polignac number, because 66473313 - 2¹² = 66469217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66473317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4798 + ... + 12488.

It is an arithmetic number, because the mean of its divisors is an integer number (5753616).

Almost surely, 2^66473313 is an apocalyptic number.

It is an amenable number.

66473313 is a deficient number, since it is larger than the sum of its proper divisors (25584543).

66473313 is a wasteful number, since it uses less digits than its factorization.

66473313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7804.

The product of its digits is 27216, while the sum is 33.

The square root of 66473313 is about 8153.1167659981. The cubic root of 66473313 is about 405.0877480956.

The spelling of 66473313 in words is "sixty-six million, four hundred seventy-three thousand, three hundred thirteen".