66058288 has 80 divisors (see below), whose sum is σ = 142848000. Its totient is φ = 29465856.

The previous prime is 66058273. The next prime is 66058297. The reversal of 66058288 is 88285066.

It is a happy 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, 520081 + ... + 520207.

It is an arithmetic number, because the mean of its divisors is an integer number (1785600).

Almost surely, 2^66058288 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 66058288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71424000).

66058288 is an abundant number, since it is smaller than the sum of its proper divisors (76789712).

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

66058288 is a wasteful number, since it uses less digits than its factorization.

66058288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 66058288 is about 8127.6249913489. The cubic root of 66058288 is about 404.2429346322.

The spelling of 66058288 in words is "sixty-six million, fifty-eight thousand, two hundred eighty-eight".