66730884 has 24 divisors (see below), whose sum is σ = 169860768. Its totient is φ = 20221440.

The previous prime is 66730837. The next prime is 66730897. The reversal of 66730884 is 48803766.

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, 252637 + ... + 252900.

It is an arithmetic number, because the mean of its divisors is an integer number (7077532).

Almost surely, 2^66730884 is an apocalyptic number.

It is an amenable number.

66730884 is an abundant number, since it is smaller than the sum of its proper divisors (103129884).

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

66730884 is a wasteful number, since it uses less digits than its factorization.

66730884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505555 (or 505553 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 66730884 is about 8168.8973552126. The cubic root of 66730884 is about 405.6102855213.

The spelling of 66730884 in words is "sixty-six million, seven hundred thirty thousand, eight hundred eighty-four".