66253056 has 72 divisors (see below), whose sum is σ = 177533664. Its totient is φ = 21934080.

The previous prime is 66253043. The next prime is 66253079. The reversal of 66253056 is 65035266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215655 + ... + 215961.

Almost surely, 2^66253056 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 66253056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88766832).

66253056 is an abundant number, since it is smaller than the sum of its proper divisors (111280608).

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

66253056 is a wasteful number, since it uses less digits than its factorization.

66253056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 66253056 is about 8139.5980244727. The cubic root of 66253056 is about 404.6398383199.

The spelling of 66253056 in words is "sixty-six million, two hundred fifty-three thousand, fifty-six".