66988848 has 40 divisors (see below), whose sum is σ = 174685248. Its totient is φ = 22119232.

The previous prime is 66988847. The next prime is 66988871. The reversal of 66988848 is 84888966.

It is not an unprimeable number, because it can be changed into a prime (66988841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386 + ... + 11657.

Almost surely, 2^66988848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66988848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87342624).

66988848 is an abundant number, since it is smaller than the sum of its proper divisors (107696400).

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

66988848 is a wasteful number, since it uses less digits than its factorization.

66988848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13161 (or 13155 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 57.

The square root of 66988848 is about 8184.6715267016. The cubic root of 66988848 is about 406.1322742746.

The spelling of 66988848 in words is "sixty-six million, nine hundred eighty-eight thousand, eight hundred forty-eight".