66973876 has 36 divisors (see below), whose sum is σ = 124476352. Its totient is φ = 31512096.

The previous prime is 66973867. The next prime is 66973877. The reversal of 66973876 is 67837966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66973877) 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 11 ways as a sum of consecutive naturals, for example, 144421 + ... + 144883.

Almost surely, 2^66973876 is an apocalyptic number.

It is an amenable number.

66973876 is a deficient number, since it is larger than the sum of its proper divisors (57502476).

66973876 is a wasteful number, since it uses less digits than its factorization.

66973876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 537 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The square root of 66973876 is about 8183.7568390074. The cubic root of 66973876 is about 406.1020151809.

The spelling of 66973876 in words is "sixty-six million, nine hundred seventy-three thousand, eight hundred seventy-six".