66548364 has 12 divisors (see below), whose sum is σ = 155279544. Its totient is φ = 22182784.

The previous prime is 66548357. The next prime is 66548369. The reversal of 66548364 is 46384566.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (66548369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2772837 + ... + 2772860.

It is an arithmetic number, because the mean of its divisors is an integer number (12939962).

Almost surely, 2^66548364 is an apocalyptic number.

It is an amenable number.

66548364 is an abundant number, since it is smaller than the sum of its proper divisors (88731180).

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

66548364 is a wasteful number, since it uses less digits than its factorization.

66548364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545704 (or 5545702 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 66548364 is about 8157.7180632822. The cubic root of 66548364 is about 405.2401441205.

The spelling of 66548364 in words is "sixty-six million, five hundred forty-eight thousand, three hundred sixty-four".