66265312 has 48 divisors (see below), whose sum is σ = 139300560. Its totient is φ = 30938112.

The previous prime is 66265301. The next prime is 66265313. The reversal of 66265312 is 21356266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66265313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43638 + ... + 45130.

It is an arithmetic number, because the mean of its divisors is an integer number (2902095).

Almost surely, 2^66265312 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 66265312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69650280).

66265312 is an abundant number, since it is smaller than the sum of its proper divisors (73035248).

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

66265312 is a wasteful number, since it uses less digits than its factorization.

66265312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595 (or 1587 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 66265312 is about 8140.3508523896. The cubic root of 66265312 is about 404.6647879116.

The spelling of 66265312 in words is "sixty-six million, two hundred sixty-five thousand, three hundred twelve".