66983273 has 8 divisors (see below), whose sum is σ = 77112192. Its totient is φ = 56994336.

The previous prime is 66983261. The next prime is 66983327. The reversal of 66983273 is 37238966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66983273 - 2¹⁰ = 66982249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66983233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33965 + ... + 35882.

It is an arithmetic number, because the mean of its divisors is an integer number (9639024).

Almost surely, 2^66983273 is an apocalyptic number.

It is an amenable number.

66983273 is a deficient number, since it is larger than the sum of its proper divisors (10128919).

66983273 is a wasteful number, since it uses less digits than its factorization.

66983273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69991.

The product of its digits is 326592, while the sum is 44.

The square root of 66983273 is about 8184.3309439440. The cubic root of 66983273 is about 406.1210074727.

The spelling of 66983273 in words is "sixty-six million, nine hundred eighty-three thousand, two hundred seventy-three".