66263232 has 112 divisors (see below), whose sum is σ = 204825600. Its totient is φ = 18511872.

The previous prime is 66263227. The next prime is 66263237. The reversal of 66263232 is 23236266.

It is an interprime number because it is at equal distance from previous prime (66263227) and next prime (66263237).

It is a tau number, because it is divible by the number of its divisors (112).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 66263232.

It is not an unprimeable number, because it can be changed into a prime (66263237) 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, 62644 + ... + 63692.

It is an arithmetic number, because the mean of its divisors is an integer number (1828800).

Almost surely, 2^66263232 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 66263232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102412800).

66263232 is an abundant number, since it is smaller than the sum of its proper divisors (138562368).

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

66263232 is a wasteful number, since it uses less digits than its factorization.

66263232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118 (or 1108 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

The square root of 66263232 is about 8140.2230927659. The cubic root of 66263232 is about 404.6605538634.

Adding to 66263232 its reverse (23236266), we get a palindrome (89499498).

The spelling of 66263232 in words is "sixty-six million, two hundred sixty-three thousand, two hundred thirty-two".