66650060 has 12 divisors (see below), whose sum is σ = 139965168. Its totient is φ = 26660016.

The previous prime is 66650057. The next prime is 66650069. The reversal of 66650060 is 6005666.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (66650069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666232 + ... + 1666271.

It is an arithmetic number, because the mean of its divisors is an integer number (11663764).

Almost surely, 2^66650060 is an apocalyptic number.

It is an amenable number.

66650060 is an abundant number, since it is smaller than the sum of its proper divisors (73315108).

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

66650060 is a wasteful number, since it uses less digits than its factorization.

66650060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332512 (or 3332510 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 66650060 is about 8163.9487994475. The cubic root of 66650060 is about 405.4464618752.

The spelling of 66650060 in words is "sixty-six million, six hundred fifty thousand, sixty".