66055928 has 32 divisors (see below), whose sum is σ = 126630000. Its totient is φ = 32294400.

The previous prime is 66055907. The next prime is 66055937. The reversal of 66055928 is 82955066.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164528 + ... + 164928.

Almost surely, 2^66055928 is an apocalyptic number.

It is an amenable number.

66055928 is a deficient number, since it is larger than the sum of its proper divisors (60574072).

66055928 is a wasteful number, since it uses less digits than its factorization.

66055928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 66055928 is about 8127.4798061884. The cubic root of 66055928 is about 404.2381205772.

The spelling of 66055928 in words is "sixty-six million, fifty-five thousand, nine hundred twenty-eight".