66026973 has 16 divisors (see below), whose sum is σ = 90354176. Its totient is φ = 42865200.

The previous prime is 66026953. The next prime is 66026977. The reversal of 66026973 is 37962066.

It is not a de Polignac number, because 66026973 - 2⁵ = 66026941 is a prime.

It is a super-2 number, since 2×66026973² = 8719122327085458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66026977) 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, 62298 + ... + 63348.

It is an arithmetic number, because the mean of its divisors is an integer number (5647136).

Almost surely, 2^66026973 is an apocalyptic number.

It is an amenable number.

66026973 is a deficient number, since it is larger than the sum of its proper divisors (24327203).

66026973 is a wasteful number, since it uses less digits than its factorization.

66026973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 66026973 is about 8125.6983084532. The cubic root of 66026973 is about 404.1790472749.

The spelling of 66026973 in words is "sixty-six million, twenty-six thousand, nine hundred seventy-three".