66554832 has 80 divisors (see below), whose sum is σ = 177845760. Its totient is φ = 21436800.

The previous prime is 66554827. The next prime is 66554863. The reversal of 66554832 is 23845566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200907 + ... + 201237.

It is an arithmetic number, because the mean of its divisors is an integer number (2223072).

Almost surely, 2^66554832 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 66554832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88922880).

66554832 is an abundant number, since it is smaller than the sum of its proper divisors (111290928).

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

66554832 is a wasteful number, since it uses less digits than its factorization.

66554832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 466 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 66554832 is about 8158.1144880420. The cubic root of 66554832 is about 405.2532724589.

The spelling of 66554832 in words is "sixty-six million, five hundred fifty-four thousand, eight hundred thirty-two".