66530548 has 24 divisors (see below), whose sum is σ = 134288000. Its totient is φ = 28250208.

The previous prime is 66530539. The next prime is 66530549. The reversal of 66530548 is 84503566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66530549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7848 + ... + 13951.

Almost surely, 2^66530548 is an apocalyptic number.

It is an amenable number.

66530548 is an abundant number, since it is smaller than the sum of its proper divisors (67757452).

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

66530548 is a wasteful number, since it uses less digits than its factorization.

66530548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21919 (or 21917 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 66530548 is about 8156.6260181524. The cubic root of 66530548 is about 405.2039779282.

It can be divided in two parts, 665 and 30548, that added together give a palindrome (31213).

The spelling of 66530548 in words is "sixty-six million, five hundred thirty thousand, five hundred forty-eight".