66580652 has 6 divisors (see below), whose sum is σ = 116516148. Its totient is φ = 33290324.

The previous prime is 66580627. The next prime is 66580663. The reversal of 66580652 is 25608566.

It is a happy 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 as a sum of consecutive naturals, namely, 8322578 + ... + 8322585.

It is an arithmetic number, because the mean of its divisors is an integer number (19419358).

Almost surely, 2^66580652 is an apocalyptic number.

It is an amenable number.

66580652 is a deficient number, since it is larger than the sum of its proper divisors (49935496).

66580652 is a wasteful number, since it uses less digits than its factorization.

66580652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16645167 (or 16645165 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 66580652 is about 8159.6968080928. The cubic root of 66580652 is about 405.3056717932.

The spelling of 66580652 in words is "sixty-six million, five hundred eighty thousand, six hundred fifty-two".