66962973 has 72 divisors (see below), whose sum is σ = 119993664. Its totient is φ = 32503680.

The previous prime is 66962971. The next prime is 66962993. The reversal of 66962973 is 37926966.

It is not a de Polignac number, because 66962973 - 2¹ = 66962971 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66962971) 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 in 71 ways as a sum of consecutive naturals, for example, 917265 + ... + 917337.

Almost surely, 2^66962973 is an apocalyptic number.

It is an amenable number.

66962973 is a deficient number, since it is larger than the sum of its proper divisors (53030691).

66962973 is a wasteful number, since it uses less digits than its factorization.

66962973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 113 counting only the distinct ones).

The product of its digits is 734832, while the sum is 48.

The square root of 66962973 is about 8183.0906752889. The cubic root of 66962973 is about 406.0799768837.

It can be divided in two parts, 6696 and 2973, that added together give a palindrome (9669).

The spelling of 66962973 in words is "sixty-six million, nine hundred sixty-two thousand, nine hundred seventy-three".