66247248 has 60 divisors (see below), whose sum is σ = 177500544. Its totient is φ = 21268800.

The previous prime is 66247211. The next prime is 66247253. The reversal of 66247248 is 84274266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313863 + ... + 314073.

Almost surely, 2^66247248 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 66247248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88750272).

66247248 is an abundant number, since it is smaller than the sum of its proper divisors (111253296).

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

66247248 is a wasteful number, since it uses less digits than its factorization.

66247248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 247 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 66247248 is about 8139.2412422781. The cubic root of 66247248 is about 404.6280138748.

The spelling of 66247248 in words is "sixty-six million, two hundred forty-seven thousand, two hundred forty-eight".