66548804 has 48 divisors (see below), whose sum is σ = 138324480. Its totient is φ = 27423360.

The previous prime is 66548803. The next prime is 66548809. The reversal of 66548804 is 40884566.

It is not an unprimeable number, because it can be changed into a prime (66548803) 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, 79862 + ... + 80690.

It is an arithmetic number, because the mean of its divisors is an integer number (2881760).

Almost surely, 2^66548804 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 66548804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69162240).

66548804 is an abundant number, since it is smaller than the sum of its proper divisors (71775676).

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

66548804 is a wasteful number, since it uses less digits than its factorization.

66548804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 66548804 is about 8157.7450315636. The cubic root of 66548804 is about 405.2410372317.

The spelling of 66548804 in words is "sixty-six million, five hundred forty-eight thousand, eight hundred four".