66072548 has 12 divisors (see below), whose sum is σ = 116320512. Its totient is φ = 32838120.

The previous prime is 66072547. The next prime is 66072581. The reversal of 66072548 is 84527066.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66072547) 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, 48788 + ... + 50123.

It is an arithmetic number, because the mean of its divisors is an integer number (9693376).

Almost surely, 2^66072548 is an apocalyptic number.

It is an amenable number.

66072548 is a deficient number, since it is larger than the sum of its proper divisors (50247964).

66072548 is a wasteful number, since it uses less digits than its factorization.

66072548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99082 (or 99080 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 66072548 is about 8128.5021990524. The cubic root of 66072548 is about 404.2720205081.

The spelling of 66072548 in words is "sixty-six million, seventy-two thousand, five hundred forty-eight".