66553060 has 24 divisors (see below), whose sum is σ = 159727680. Its totient is φ = 22818144.

The previous prime is 66553051. The next prime is 66553073. The reversal of 66553060 is 6035566.

It is a happy 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, 237550 + ... + 237829.

It is an arithmetic number, because the mean of its divisors is an integer number (6655320).

Almost surely, 2^66553060 is an apocalyptic number.

It is an amenable number.

66553060 is an abundant number, since it is smaller than the sum of its proper divisors (93174620).

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

66553060 is a wasteful number, since it uses less digits than its factorization.

66553060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475395 (or 475393 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 66553060 is about 8158.0058837929. The cubic root of 66553060 is about 405.2496758497.

The spelling of 66553060 in words is "sixty-six million, five hundred fifty-three thousand, sixty".