66930925 has 12 divisors (see below), whose sum is σ = 83169280. Its totient is φ = 53431920.

The previous prime is 66930911. The next prime is 66930931. The reversal of 66930925 is 52903966.

It is not a de Polignac number, because 66930925 - 2⁵ = 66930893 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 10516 + ... + 15634.

Almost surely, 2^66930925 is an apocalyptic number.

It is an amenable number.

66930925 is a deficient number, since it is larger than the sum of its proper divisors (16238355).

66930925 is a wasteful number, since it uses less digits than its factorization.

66930925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652 (or 5647 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 66930925 is about 8181.1322566012. The cubic root of 66930925 is about 406.0151842218.

The spelling of 66930925 in words is "sixty-six million, nine hundred thirty thousand, nine hundred twenty-five".