66253248 has 112 divisors (see below), whose sum is σ = 203362560. Its totient is φ = 21111552.

The previous prime is 66253241. The next prime is 66253249. The reversal of 66253248 is 84235266.

66253248 is a `hidden beast` number, since 6 + 625 + 3 + 24 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66253241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38911 + ... + 40577.

Almost surely, 2^66253248 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 66253248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101681280).

66253248 is an abundant number, since it is smaller than the sum of its proper divisors (137109312).

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

66253248 is a wasteful number, since it uses less digits than its factorization.

66253248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711 (or 1695 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 66253248 is about 8139.6098186584. The cubic root of 66253248 is about 404.6402291988.

The spelling of 66253248 in words is "sixty-six million, two hundred fifty-three thousand, two hundred forty-eight".