66585828 has 24 divisors (see below), whose sum is σ = 162122688. Its totient is φ = 21230176.

The previous prime is 66585809. The next prime is 66585833. The reversal of 66585828 is 82858566.

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, 120351 + ... + 120902.

It is an arithmetic number, because the mean of its divisors is an integer number (6755112).

Almost surely, 2^66585828 is an apocalyptic number.

It is an amenable number.

66585828 is an abundant number, since it is smaller than the sum of its proper divisors (95536860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66585828 is a wasteful number, since it uses less digits than its factorization.

66585828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241283 (or 241281 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The square root of 66585828 is about 8160.0139705763. The cubic root of 66585828 is about 405.3161743828.

The spelling of 66585828 in words is "sixty-six million, five hundred eighty-five thousand, eight hundred twenty-eight".