66748576 has 48 divisors (see below), whose sum is σ = 138801600. Its totient is φ = 31533568.

The previous prime is 66748567. The next prime is 66748589. The reversal of 66748576 is 67584766.

It is a zygodrome in base 4.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64995 + ... + 66013.

It is an arithmetic number, because the mean of its divisors is an integer number (2891700).

Almost surely, 2^66748576 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 66748576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69400800).

66748576 is an abundant number, since it is smaller than the sum of its proper divisors (72053024).

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

66748576 is a wasteful number, since it uses less digits than its factorization.

66748576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1133 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The square root of 66748576 is about 8169.9801713346. The cubic root of 66748576 is about 405.6461281109.

The spelling of 66748576 in words is "sixty-six million, seven hundred forty-eight thousand, five hundred seventy-six".