66684882 has 32 divisors (see below), whose sum is σ = 146168064. Its totient is φ = 20114000.

The previous prime is 66684859. The next prime is 66684883. The reversal of 66684882 is 28848666.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66684883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12757 + ... + 17207.

It is an arithmetic number, because the mean of its divisors is an integer number (4567752).

Almost surely, 2^66684882 is an apocalyptic number.

66684882 is an abundant number, since it is smaller than the sum of its proper divisors (79483182).

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

66684882 is a wasteful number, since it uses less digits than its factorization.

66684882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694.

The product of its digits is 884736, while the sum is 48.

The square root of 66684882 is about 8166.0811898976. The cubic root of 66684882 is about 405.5170594542.

The spelling of 66684882 in words is "sixty-six million, six hundred eighty-four thousand, eight hundred eighty-two".